IAD00LA048

NTSB accident investigation · Grumman American AA-1A · Northampton, MA · June 4, 2000

Accident · No injuriesLimited investigationFinal report
Date
June 4, 2000, 10:30 local (14:30 UTC)
Place
Northampton, MA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N6340LGrumman American AA-1A
Weather
Visual (VMC) · Day
Status
Completed · report December 18, 2001
Report
Approved by Office Director
FAA report
20000604041289A
Case key
49373

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 student pilot's failure to maintain directional control 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 - initial climb
Directional control - not obtained/maintainedPilot in commandCause
In flight collision with objectTakeoff - initial climb
Airport facilities,visual apch slope ind(vasi) - other

Analysis

The student pilot initiated a soft-field takeoff with a full 'up' elevator and a full power application. As the airplane became airborne, it drifted left off the runway towards airport lighting fixtures. The student pilot attempted to over fly the lighting after the airplane departed the runway, but the left main landing gear struck lights and the airplane nosed over. According to the FAA Advisory Circular AC-61-23C: 'The effect of torque increases in direct proportion to engine power, airspeed, and airplane attitude. If the power setting is high, the airspeed slow, and the angle of attack high, the effect of torque is greater. During takeoffs and climbs, when the effect of torque is most pronounced, the pilot must apply sufficient right rudder pressure to counteract the left turning tendency and maintain a straight takeoff path.'

Factual narrative

On June 4, 2000, at 1030 Eastern Daylight Time, a Grumman American AA-1A, N6340L was substantially damaged after collision with airport lighting and terrain during takeoff from Runway 14 at the Northampton Airport (7B2), Northampton, Massachusetts. The student pilot was not injured. Visual meteorological conditions prevailed and no flight plan was filed for the local solo flight conducted under 14 CFR Part 91.

In a written statement, the student pilot said:

"During a soft field take off, I went into ground effect and the plane drifted to the left at which time the plane settled back to the ground. The plane went into the grass. [I] applied full right rudder and plane straightened out, then hit the VASI box about 20 feet in front of the plane. [I] tried to climb over [the] VASI box [but] clipped the left wheel on the VASI. [The] plane nosed over and flipped when the nose dug in. [I] turned off master switch and climbed out of the plane with no injuries."

In a subsequent written statement, the student pilot said:

"I pulled the yoke all the way back and applied full power. The nose came up and I could not see the runway ahead of me. The airplane became light, rendering the brakes ineffective. At the same time the aircraft started to drift left. I lowered the nose to see where I was and found I was heading towards one of the runway lights."

In a written statement, the student pilot's flight instructor said:

"During take off, the plane lifted barely off and went to the left. Out on the grass, [the plane] sat down and hit the VASI. Pilot tried to lift the plane over the VASI, but the left main struck it, and [the plane] tumbled over."

In a telephone interview, a Federal Aviation Administration aviation safety inspector said he interviewed the student pilot. The student pilot reported 18 hours of total flight experience and said that the airplane had no mechanical deficiencies.

The weather reported at Springfield, Massachusetts, 9 miles southeast of Northampton, was scattered clouds at 25,000 feet with winds from 220 degrees at 3 knots.

According to the FAA Advisory Circular AC-61-23C:

"The effect of torque increases in direct proportion to engine power, airspeed, and airplane attitude. If the power setting is high, the airspeed slow, and the angle of attack high, the effect of torque is greater. During takeoffs and climbs, when the effect of torque is most pronounced, the pilot must apply sufficient right rudder pressure to counteract the left turning tendency and maintain a straight takeoff path."

Aircraft

Registration
N6340L
Reported as
Grumman American AA-1A
Category
Airplane
Serial number
AA1A-0340
Airframe hours
2,311
Engine
Lycoming O-235-C2C, 108 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Registered owner
Ronald D. Hoban
Airworthiness certificate
Standard, Normal
Last inspection
Annual · December 12, 1999 · 29 hours before
Departed
7B2
Airport
7B2 · Northhampton Airport, runway 14, 3,506 × 50 ft, asphalt

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
29
Certificate
Student
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
21 total · 15 in this make and model · 2 as pilot in command · 15 in the last 90 days · 14 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
220° at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
64 °F, dew point 50 °F
Altimeter
30.00 inHg
Observed at
CEF, 9 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.