IAD97LA003

NTSB accident investigation · Maule MX-7 · Mahopac, NY · October 5, 1996

Accident · No injuriesLimited investigationFinal report
Date
October 5, 1996, 14:39 local (18:39 UTC)
Place
Mahopac, NY
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N6124QMaule MX-7
Weather
Visual (VMC) · Day
Status
Completed · report April 15, 1998
Report
Approved by Office Director
FAA report
19961005031059A
Case key
28148

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

the pilot's failure to maintain directional control during takeoff, which resulted in a inflight collision with trees (sapplings). A factor related to the accident was: the quartering tailwind that was encountered during takeoff.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of control - in flightTakeoff
Weather condition - tailwindFactor
Weather condition - crosswindFactor
Directional control - not maintainedPilot in commandCause
In flight collision with objectTakeoff
Object - tree(s)Factor

Analysis

The private pilot and passenger flew to a private airstrip and completed two full stop landings to the south on the turf runway. After a brief stop, the pilot noticed that the active runway had changed to the north. He taxied to the south end of the runway, completed engine checks, and set 24 degrees of flaps. The pilot stated, 'as I fully opened the throttle, I held back-pressure and some right rudder to maximize tail-wheel steering.' The pilot stated that 'the south end of the field was much rougher than he expected, and after a strong bounce, the airplane remained airborne in ground effect.' Also, the pilot stated that he was so focused on the airplane's lack of acceleration, that he did not realize it was headed directly towards a stand of saplings. The airplane impacted the trees in a wings level attitude less than 10 feet off the ground. The airplane had traveled a distance of less than 700 feet, and drifted off the left side of the turf runway. Winds recorded at an airport 18 miles to the south were from 130 degrees at 8 knots.

Factual narrative

On October 5, 1996, approximately 1439 eastern daylight time, a Maule MX-7, N6124Q, was substantially damaged when it impacted trees during takeoff from Mahopac Airport, Mahopac, New York. The certificated private pilot/owner and the passenger were uninjured. Visual meteorological conditions prevailed and no flight plan was filed for the personal flight conducted under 14 CFR Part 91.

The pilot stated that they took off from Danbury Municipal Airport, Danbury, Connecticut, approximately 1400, and flew directly to the private grass strip at Mahopac. The runway at Mahopac was oriented north/south and was 1,800 X 150 feet. The private pilot stated that he completed two full stop landings to the south, and then shutdown the airplane for a brief stop. On startup, the pilot noticed that the active runway had changed to the north, and stated that he had never taken off or landed in that direction. He taxied to the south, completed the takeoff checklist, and added 24 degrees of flaps. The pilot stated, "as I fully opened the throttle, I held back-pressure and some right rudder to maximize tail-wheel steering." The pilot also stated that, "the south end of the field was much rougher than he expected, and after a strong bounce, the airplane remained airborne in ground effect". The pilot stated that he focused on the airplane's lack of acceleration, and did not see the group of saplings until they "loomed" in the windshield. With the airspeed too slow to climb, the pilot stated that the airplane impacted the trees in a wings level attitude less than 10 feet off the ground.

The pilot depicted the runway with no centerline markings and sloped uphill from the south to the north end of the runway. The measurements taken of the accident showed the airplane traveled a distance of 700 feet down the runway and drifted left more than 75 feet into the saplings. The pilot stated that he had no mechanical problem with the engine nor with the airplane's flight controls.

Winds at an airport 18 miles to the south of Mahopac were reported to be from 130 degrees at 8 knots.

Aircraft

Registration
N6124Q
Reported as
Maule MX-7
Category
Airplane
Serial number
10073C
Airframe hours
120
Engine
Lycoming IO-235 W1A5D, 235 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
David Macklin
Airworthiness certificate
Standard, Normal
Last inspection
Annual · January 1, 1996 · 20 hours before
Departed
0000 · NY
Destination
DXR · Danbury, CT
Airport
NONE · Mahopac, runway 1, 1,800 × 150 ft, grass/turf

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
78
Certificate
Private
Airplane ratings
Single-engine land, Single-engine sea
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
1,200 total · 120 in this make and model · 1,200 as pilot in command · 20 in the last 90 days · 5 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
130° at 8 knots
Visibility
20 statute miles
Temperature
52 °F, dew point 36 °F
Altimeter
30.00 inHg
Observed at
HPN, 18 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.