# NTSB NYC84FA137: Grumman American AA-1C, N9950U, Marlboro, NJ, April 10, 1984

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: April 10, 1984, 13:37 local (18:37 UTC)
- Place: Marlboro, NJ
- Location: 39.4871° N, 75.3246° W: Placed by OpenAirDocs: center of Marlboro, NJ, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.4871&lon=-75.3246&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 35331
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC84FA137
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/35331/pdf
- Page: https://openairdocs.org/ntsb/NYC84FA137

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- In flight collision with object, takeoff - initial climb
  - object - wire,transmission
  - in-flight planning/decision - improper, pilot in command (cause)
  - visual/aural perception, pilot in command (contributing factor)
  - judgment - poor, pilot in command (cause)
- Loss of control - in flight, descent - uncontrolled
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

PILOT AND PAX DEPARTING 2170 FT RWY AT NEAR MAX GROSS WEIGHT PAX STATED IT DIDNT APPEAR AS IF THEY WERE GOING TO CLEAR HIGH TENSION POWER LINES LOCATED ABOUT 2400 FT FROM RWY END.PILOT MADE LEFT TURN AND IMPACTED UNMARKED WIRES ABOUT 600 FT LEFT OF EXTENDED CENTERLINE.IT WAS WITHIN THE A/C PERFORMANCE CAPABILITIES TO CLEAR THE WIRE OBSTRUCTIONS OF THE RWY END,HOWEVER,THE LOSS OF LIFT IN THE PREMATURE LEFT TURN RESULTED IN A DEGREDATION  OF A/C PERFORMANCE. THE PILOT WAS NOTABLE TO CLEAR THE ADDITIONAL WIRES DURING THE TURN.

## Aircraft

- Registration: [N9950U](https://openairdocs.org/deregistered/N9950U-2013-05-31), registration cancelled 2013-05-31, S/N AA1C0164, built 1978 (OpenAirDocs)
- Reported make and model: GRUMMAN AMERICAN AA-1C
- Registry model: [Grumman American Avn. AA-1C](https://openairdocs.org/model/grumman-american-avn-aa-1c) (registry code 3960100) (OpenAirDocs)
- Registry engine: [Lycoming 0-235 series](https://openairdocs.org/engine/lycoming-0-235-series) (registry code 41505, 4 cycle) (OpenAirDocs)
- Category: Airplane
- Serial number: AA1C-0164
- Airframe hours: 1483
- Engines: LYCOMING O-235-L2C 115 horsepower reciprocating
- Damage: Destroyed
- Flight: Personal, Part 91
- Registered owner: Read, Franklin S.
- Airworthiness certificate: Standard, Utility
- Last inspection: Annual, May 15, 1982, 96 hours before
- Departed: 2N8, MARLBORO, NJ
- Airport: 2N8, Marlboro, runway 9, 2,170 × 40 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 45; private; airplane ratings: single-engine land; medical: class 3, expired; seat: left; toxicology performed

## Weather

- Conditions: Visual (VMC), Day
- Wind: 10° at 13 knots
- Visibility: 25 statute miles
- Lowest ceiling: none
- Temperature: 57 °F, dew point 18 °F
- Altimeter: 30.00 inHg
- Observed at: EWR, 20 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 (OpenAirDocs).

- [Accident 19840410027749A](https://openairdocs.org/incident/19840410027749A), Apr 10, 1984: Gulstm AA1C, Marlboro, NJ, Destroyed. Struck wires after takeoff. Winds reported variable nne to south. Aircraft out of annual, no medical or biennial.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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