Non-Stop Transcontinental Flight in a
Mooney
Jonathan Paul
April 2010
I have always been fascinated with long distance flight,
probably related to a long standing interest in Charles Lindbergh going back to
age eleven or so when I first read “The Spirit of St. Louis”. I have marveled in the accomplishments of Wiley
Post, Howard Hughes, Amelia Earhart, Rutan and Yeager, and Steve Fossett. I
toyed with such fantasies as flying to
Jonathan and 08M
In general, a non-stop coast-to-coast trip is beyond the capabilities of most light planes, including my Mooney. To succeed in this venture required the adoption of rather extreme flying procedures and the patience to wait for the right winds and weather. I made two attempts at a non-stop flight. The first attempt failed. The second was successful.
Coast to Coast
History: The first non-stop continental flight took place in on May 3rd,
1923 piloted by two army pilots, John Macready and Oakley Kelly. They flew a Fokker T-2, a huge single engine
monoplane from
Fokker T2 Aircraft 1923
N9208M: My airplane is a 1966 Mooney E-Model. The Mooney design has always been considered fast and efficient. What is not generally appreciated is that a Mooney’s efficiency can also yield exceptional range. Although my 45-year old Mooney does not have all the speed modifications of the later “201” models or the power of the current long-body models, it is shorter and lighter and is considered the fastest of the early Mooneys. It is completely stock with the exception of long-range tanks. With these, it has an in-the-wing fuel capacity of 90 gallons as opposed to the standard 52 gallons.
I had done considerable test flying to explore the
long-range flying potential of this aircraft.
In general, to achieve long range, one has to fly high, use very low
power settings, slow propeller speed, and lean the mixture to the maximum
extent possible. The following are some
data points for various flying configurations in my airplane:
Mode |
Altitude |
RPM |
MP |
Fuel Flow (GPH) |
TAS (knots) |
MPG (nm/gal) |
No Reserve Range (nm) |
Normal Cruise |
7500’ |
2500 |
23” |
10.5 |
150 |
14.2 |
1,221 |
|
13,000 |
2000 |
17” |
6.0 |
123 |
20.0 |
1,763 |
Very |
13,000 |
1950 |
15” |
5.2 |
115 |
23.1 |
1,901 |
The practical range is significantly lower than the numbers above because one has to allow for taxi fuel, fuel used in the climb and reserve fuel of at least an hour.
Coast to Coast
Distance: The shortest distance
between the Pacific and
Flight Plan route via airways.
Tailwinds: To be at all possible, the non-stop coast-to-coast
flight must proceed eastward to take advantage of prevailing westerly
winds. In fact a good tailwind is
essential to success. To provide enough
reserve, using the 6.0 gph
Weather: In our small airplanes, with normal
general aviation equipment, we generally don’t plan for trips that cross 1800+
miles. Lining up favorable winds with no
serious en route weather (icing, or convective weather), is not that easy. The wind and weather forecasts from sites
like AWC (
First Attempt: I had been following the weather for
several months during the winter and juggling personal and employment
activities trying to find a window of suitable weather and winds that coincided
with my availability. This cross country
trip would require about a week to complete including the preparation, the
actual flight, and the return trip.
Nothing worked out. Having
retired from my job on April 1st, I felt I could be a little less
picky about conditions and could make an attempt with less than optimal
conditions. Easter Sunday, April 4th,
in retrospect, would have been near perfect, but the forecasts leading up to that
date weren’t encouraging and I had not made the decision to launch in time. But the wind forecasts for Tuesday April 6th
looked pretty good with strong westerly winds in the West, veering into south
west winds over
Taxi and pre-takeoff fuel: 1 gallon
Extra Fuel for climb to 13,000 feet: 5 gallons
Reserve (1 hour at cruise): 6 gallons
En route Fuel: 74 gallons (12 hours, 20 minutes at 6.0 gph))
The flight plan I ran off on Monday afternoon using forecasted winds showed 12 hours 47 minutes en route using my long range cruise mode. (13,000 feet at 6 gph). The estimated flight duration was not very favorable as it cut unacceptably into the reserve. But, it was worth a try, I thought.
Launching: The departure from
Flight to
Flight Plan: I filed my flight plan before going to bed. The briefer was quite interested in a Mooney flying 1800 plus miles and asked me all sorts of interesting questions. I slept soundly until the alarm went off at 3:30am
Launch: I had planned a 5am departure. But there was a lot to do between the alarm and lift off. I
brewed a thermos of coffee in the room, packed my bags, and checked the weather. The forecasted winds were the same. There were clear skies both in
As the
Takeoff: I called for my release which came almost
immediately and at 5:12 (only a few minutes later than planned), I poured on the coal and ascended into the night sky with
I also noted that the autopilot was holding an almost 30 degree cut to the left (North) of the course for V66. Strange, I thought, maybe the gyro compass (HSI) was not set correctly on takeoff. I also was somewhat displeased to see that the huge westerly winds forecasted had not yet boosted our speed in the climb much beyond 100 knots. Hmmm…. Let’s see what happens when we are settled in cruise.
Over the
Cruise: About 50 miles east of
Over Bard VOR (BZA), which is 137 nm from
Change of Plans: I flew on for another hour until I was abeam
of
“
“N9208M, Cancellation
received. What is the identifier for
It was probably the first time any aircraft has diverted to
A Long Slog Home: The trip home to
The aborted first attempt at a non-stop cross country flight
Undeterred: I was disappointed but not discouraged. I was hopeful that there would be some more days of strong “winter’ winds before the summer weather established itself. I also felt that I could improve on my chances of success by making some minor changes to my flight strategy:
First, I intended to fly at lower power setting to improve efficiency and increase miles per gallon. On my first attempt I was using a cruise settings burning 6.0 gallons per hour and thereby limiting myself to 12 hours of flight. If I could burn 5.0 gallons per hour, I reasoned, I could remain aloft in cruise for 15 hours. I would go slower (115 knots vs. 123 knots) but I would be getting better miles per gallon (23 vs. 20 mpg). But more importantly, if the winds were reasonable strong, that extra time aloft would translate into greater range. So I determined to set power to burn 5.0 gph.
Secondly, I was determined to fly at 15,000 feet rather than 13,000. Presumably the winds would be stronger at the higher level. The extra altitude would, by default, lower the power produced by the engine, and thereby reduce the fuel flow to the desired 5.0 gph.
Third, I decided that it was unnecessary to get up early for
a 5am takeoff, and that a daylight departure would make the morning
preparations and takeoff easier. I had
some difficulty staying awake on the aborted first flight and I figured that a
full and restful night’s sleep would be helpful. This later schedule, however,
would mean I would be landing after sunset in
Waiting for the
Weather: Unfortunately, most of
April was characterized by sluggish winds and by generally bad weather along
the southern tier of the
Preparing Again: I
went through the preparation drill as before.
I poured over my 4 page check list making sure I had everything in
order. I filled my oxygen bottles and
changed the oil even though there had been only had 18 hours of operation since
the last oil change. I packed my small
overnight valise. I updated the database
on the Garmin 430W. By Wednesday afternoon,
all was in readiness and I flew down to Montgomery Field, just north of
Dual Flight Plans: I
had prepared two different flight plans:
The first light plan was the same as before, essentially a straight shot
across the southern US via
Departure: The drill in the morning was much the
same as on the previous attempt except it was daylight when I arrived at the
airport. This made loading up and doing
my preflight much easier. Actually,
there wasn’t much to do since the previous evening I had fueled the airplane,
topped off the oil, and organized the cockpit.
As before, I coaxed an additional 2 gallons of fuel into the extended
tanks, making for an actual fuel load of 90 gallons. I never planned the flight for 90 gallons,
but rather for the official 86 gallons.
But I knew it was there if I needed it in a pinch. If I was tight on fuel at the end of the flight,
I planned to run one tank dry and therefore know that all my usable fuel was in
a known tank. But from past experience,
I was aware that a restart at altitude after running a tank dry seems to take
forever, and doing that in the dark over unfamiliar
I called for my clearance which came back simply as:
“Cleared to Savannah airport, after takeoff fly 270 degrees, radar vectors to Mission Bay (VORTAC), join Victor 66 Gila Bend as filed, climb to and maintain three thousand feet, expect fifteen thousand in 5 minutes, squawk 7214, frequency 119.6”.
Then I was on my way.
After two minutes going westbound after takeoff, the controllers turned me
to my on course heading and joined V66 and headed east. My climb was slow as I was throttled back to
normal cruising power and leaned out to 10 gph (and less as I got higher). I was gratified that my ground speed showed
120 knots while I was indicating 90. This
was a good initial sign.
Cruising over the South West: The wind was really tearing along at 50-60 knots directly on my tail. It was relatively smooth, but I soon became aware in my climb that there were strong up and down drafts. One moment I’d be climbing at 1500 feet per minute and the next unable to maintain altitude in my climb. I eventually reached my planned cruising altitude of 15,000 feet helped by a strong updraft and set up the engine to my planned cruising settings: 1950 RPM, maximum, manifold pressure (16 “), and mixture leaned to 5.0 gallons per hour. It because quite obvious that the engine was not happy with these settings. It was running rough and occasionally missing. I found I had to richen it out to 5.2 gph to be reasonably smooth and at 5.3 gph it was purring like a well-fed pussy cat.
The second unintended situation was that the plane could not maintain a reasonable airspeed at this power setting at 15,000 feet. I would set it up at an indicated airspeed of 95 knots and then the airspeed would start to decay and the deck angle would get steeper and steeper, finally mushing along at an indicated airspeed of 70 knots as the autopilot tried to hold altitude. This was not good planning. I had never actually test flown the airplane in this configuration at 15,000 feet which turned out to be a careless error, but not a fatal one. Eventually I descended to 13,000 feet and flew most of the flight at this altitude burning 5.2 gph and truing out at 115 knots.
The first half of the flight
Mountain Waves: The ride over southern
213 knots groundspeed over the
By the time we reached
Equipment: This coast-to-coast flight relied on installed equipment that I would classify as essential to achieving long distance flight in a safe and comfortable manner:
Dual Garmin GPSs (430W and 695), JPI Fuel totalizer on the lower right,
STEC-30 Autopilot, King HSI.
My Front Office: The cockpit was a cozy and friendly place. I had everything close at hand. I used a strap-on knee board to record clearances and to make notes about flight conditions. The ashtray to my left held a supply of pens and pencils. The O2 tank was strapped to the passenger’s seat to my right with the capacity and fuel flow gauges easily visible. The O2 delivery tube was suspended from one of the overhead panel spot lights to support the weight of the tube. My IFR chart atlas from Aircharts was on the seat next to me, but really served only as a backup to the GPS. On the seat behind me within easy reach (remember this is the short body E-Model) was my flight bag full of aviation gadgets and charts. The rear seat also held my lunch bag, two quart bottles of water, handheld VHF radio, and spare headset. In a wall pocket to my left was my oxygen level sensor that I from time to time strapped onto one index finger to confirm that I really was feeling as well as I felt. The same pocket held two LED flashlights.
On this flight, I dressed for comfort, wearing draw string sweat pants and sweat top over a T shirt. My first act on reaching cruising altitude was to shed my shoes, move the seat back a notch or two, and do my best to feel relaxed in spite of the inherent excitement of the task at hand.
I felt I must look somewhat ridicules. My head was covered by my Mooney baseball cap, eyes obscured by dark sunglasses, the Bose headset hid everything recognizable as human from the side, and the rubber mustache that is part of the Oximizer cannulus makes one look like a plastic walrus.
Fuel Management: One of my most critical tasks was to switch fuel tanks so as to maintain an even fuel load between the left and right wings. The fuel gauges in my airplane are ancient and highly inaccurate. But the JPI fuel totalizer kept track of fuel use and fuel remaining as well as calculating endurance and current miles per gallon (it is connected to the GPS). But it did not tell me how much of the total fuel remaining is in each tank. To handle this task I kept a detailed log of fuel used at each switching of tanks. During the flight, I switched tanks 7 times. After initially using 6.2 gallons from the right tank (in the climb), I switched tanks every 2 hours (about every 10-11 gallons). In general, there was never much more than a 5 gallon difference between the left and right sides. Below is the fuel log from the trip for those who might be interested in such details. Note that the time to destination is significantly affected by the current ground speed at the time I switched tanks.
Leg Start (UCT) |
Tank Used |
Fuel Used |
Fuel On Board * |
Leg Fuel Used |
Left Tank |
Right Tank |
Endur- ance |
Time to Dest |
Fuel Flow |
13:15 |
R |
0.0 |
86.0 |
6.2 |
43 |
43 |
- |
- |
13.2 |
13:47 |
L |
6.2 |
78.8 |
11.0 |
43 |
36.8 |
13:13 |
9:03 |
5.9 |
15:37 |
R |
17.2 |
68.8 |
10.5 |
32.0 |
36.8 |
12:58 |
7:42 |
5.3 |
17:30 |
L |
27.7 |
58.3 |
10.4 |
32.0 |
26.3 |
11:05 |
7:47 |
5.2 |
19:30 |
R |
38.1 |
47.9 |
10.8 |
21.6 |
26.3 |
9:09 |
5:21 |
5.3 |
21:30 |
L |
48.9 |
37.1 |
10.5 |
21.6 |
15.5 |
7:00 |
4:37 |
5.3 |
23:30 |
R |
59.4 |
26.6 |
10.6 |
11.1 |
15.5 |
4:59 |
2:34 |
5.3 |
01:30 |
L |
70.8 |
16.0 |
4.0 |
11.1 |
4.4 |
2:58 |
0:34 |
8.0 |
02:10 |
- |
74.0 |
12.0 |
- |
7.1 |
4.4 |
- |
0:00 |
|
* Actual fuel at start was 90 gallons, at end 16 gallons
Direct Routing: The filed flight plan route followed the
airways and was relatively straight from
“After
I was pretty pleased. This bypassed 10 intermediate waypoints and shortened the route somewhat by eliminating an equal number of twists and turns.
As I approached the Dallas/Fort Worth class B airspace, center gave me a revised routing that would take me around the Class B area to the south. They explained, somewhat apologetically that if I were VFR, I could fly directly over the area. But being IFR, I had to go around. “Go figure!” the controller added.
I had one more direct clearance, after
Shifting
Winds: As expected, by the time I had reached central
Crossing
The Southeast: Abeam of
124 Knots over
As I progressed eastward, the sun, low on the horizon behind me, began to strike the instrument panel over my left shoulder. The flight conditions were absolutely smooth. The autopilot was doing its usual perfect job. It seemed incredibly peaceful and quiet in the cockpit. This was how I had hoped and imagined any long flight would be, a time to wonder at the marvel of flight and to be at peace with one’s self. Forgotten were the up and down drafts over the Southwest.
Over eastern
An Arrival Dilemma:
Over
With the tail wind increasing and with the substantial reduction
of my fuel load, I consider making some reduction in power and airspeed. This would have the effect of increasing my
MPG as well as my reserves at the end of the flight. On the other hand, I was approaching the end
of the flight with little more than two hours to go. My reserves were ample. The totalizer showed an endurance of 4 hours
and 23 minutes. I could afford to
increase speed and get to
I considered emergency alternates should anything start to
go sour:
“Good evening,
November 9208M,
Whoa…. I am suddenly
re-connected to the rest of the world.
Bill Rabek is an Atlanta-based air traffic controller, flight lead for
the Mooney Caravan to
Descent: I passed
over
Descending into
About 50 miles out of
Arrival: I turned off the active runway onto the
parallel taxiway and requested directions to Signature Aviation. Shortly afterwards a golf cart came careening
out to my taxiway with the obvious message, “Follow Me” which I compliantly did,
grateful to have someone else worry about the navigation for awhile. We reached a parking place and I shut down
the engine. I was in
Afterwards: Much
to my delight, the night manager at Signature told me that they had received
several calls of congratulations to be delivered to me. Figuring that I might be some sort of VIP,
they waived the $75 dollar overtime charge, which also pleased me. I was directed to a nearby hotel and
personally delivered there by the now off-duty line manager. Wide awake (after all it is only 7 pm
More Details: For the detail-minded among the readers, follows my navigation log from the flight. No attempt was made to clean up the entries. This was exactly as created.
Leg Start (UCT) |
Location |
FL |
IAS |
GS |
Dist to Dest |
Time to Dest |
Endur-ance |
Flight Conditions |
13:15 |
|
|
|
|
1845 |
|
|
Overcast |
13:55 |
Imperial (IMP) |
130-150 |
102 |
200 |
1763 |
8:40 |
13:15 |
Light chop, up and down
drafts |
14:10 |
Bard (BZA) |
130-150 |
110 |
201 |
1717 |
8:34 |
14:45 |
5.4 gph, 35.6 mpg, up and
down drafts |
14:20 |
MOHAK Intersection |
130-150 |
102 |
179 |
1685 |
9:25 |
13:35 |
5.7 gph, VFR clear |
14:42 |
Gila Bend (GBN) |
130-150 |
106 |
180 |
1619 |
8:56 |
13:41 |
20 degrees left deflection.
Light chop |
14:54 |
Stanfield (TFD) |
130-150 |
90 |
175 |
1580 |
8:36 |
13:27 |
Undercast, parachute
jumping at Eloy |
15:55 |
Abeam San Simon (SSO) |
130-150 |
102 |
173 |
1441 |
8:11 |
12:21 |
Severe Mountain Wave, Full
power. |
16:20 |
Abeam Deming (DMN) |
130-150 |
80-110 |
Var 150 |
1357 |
9:10 |
12:09 |
Severe Mountain Wave |
16:51 |
Newman (EWM) (Abeam |
130-150 |
105 |
164 |
1287 |
7:16 |
11:43 |
Direct |
17:11 |
Abeam Salt Flats (SSO) |
130-150 |
100 |
158 |
1225 |
7:36 |
11:19 |
Above Guadalupe Mountain
Range |
17:48 |
Abeam Wink (INK) |
130-150 |
85 |
149 |
1131 |
7:33 |
10:48 |
Smooth |
18:32 |
Abeam |
130 |
97 |
151 |
|
6:11 |
10:08 |
New routing to avoid DFW |
19:03 |
Abeam Tuscola (TQA) |
130 |
100 |
149 |
|
5:48 |
9:36 |
|
19:46 |
Glen Rose (JEN) |
130 |
97 |
149 |
773 |
5:03 |
8:52 |
At this point, I know we
will make it, 46 gallons left |
19:52 |
CELTIC Intersection |
130 |
96 |
144 |
|
5:22 |
8:41 |
|
20:19 |
Cedar Creek (CQY) |
130 |
96 |
129 |
744 |
5:45 |
8:18 |
Light chop, Direct Macon,
GA |
20:58 |
Abeam |
130 |
97 |
128 |
690 |
5:34 |
7:38 |
Discussion with FTW
controller. Smooth, few clouds at 10K |
21:25 |
Abeam |
130 |
95 |
126 |
633 |
5:05 |
7:09 |
Smooth, getting colder |
22:00 |
|
130 |
96 |
130 |
553 |
4:21 |
6:35 |
Sun lower, smooth, freq
quiet, still FTW |
22:20 |
|
130 |
97 |
135 |
506 |
3;46 |
6:11 |
Revised routing, MEI Direct
MCN |
22:42 |
Jackson MS |
130 |
100 |
131 |
466 |
3:37 |
5:48 |
|
23:14 |
Meridian MS (MEI) |
130 |
99 |
132 |
396 |
3:03 |
5:16 |
Direct MCN |
00:07 |
Abeam |
130 |
97 |
136 |
270 |
1:57 |
3:51 |
Shadows longer, called
Signature via FSS |
00:39 |
Abeam |
130 |
96 |
132 |
199 |
1:27 |
3:51 |
Night |
01:10 |
|
130 |
98 |
137 |
129 |
0:56 |
3:18 |
Night |
01:28 |
|
130 |
98 |
138 |
86 |
0:38 |
3:04 |
Starting Down |
02:05 |
|
130 |
- |
- |
0 |
|
|
Totalizer = 12.0 gallons
plus 4 = 16 gallons remaining |