Grumman American AA-1C N9606U

Summary

On 29 May 1998 at about 14:30 local time, a Grumman American AA-1C registered N9606U was involved in an accident near Roanoke, Texas, United States. One person was on board and one had minor injuries. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

29 May 1998 at 14:30

Classification

Accident

Location

Roanoke, Texas, United States

Nearest airport

Northwest Regional (52F)

Coordinates

33.0009, -97.2303

Aircraft

Grumman American AA-1C

Registration

N9606U

Category

Airplane

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Route

Unknown → Fort Worth

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

FTW98LA242

1 person had minor injuries.

The loss of engine power resulting from an excessively rich mixture for an undetermined reason. A factor was the lack of suitable terrain for the forced landing.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

During the initial takeoff climb, the engine gradually lost power, and the airplane descended into trees approximately 1/4 mile from the departure end of the runway. Examination of the engine revealed evidence that the power loss resulted from an excessively rich mixture. Black carbon deposits were present on the exhaust valves and exhaust stacks of two cylinders, and the engine oil drained from all the cylinders contained aviation fuel. Examination of the carburetor revealed no evidence of any discrepancies that would have resulted in a rich mixture. The reason for the excessively rich mixture could not be determined.

Quoted verbatim from the NTSB record.