Grumman AA-5B N74463

Summary

On 20 December 1984 at about 19:30 local time, a Grumman AA-5B registered N74463 was involved in an accident near Corona, California, United States. 2 people were on board and 2 were seriously injured. The aircraft was destroyed. No probable cause statement is available for this record.

Date

20 December 1984 at 19:30

Classification

Accident

Location

Corona, California, United States

Nearest airport

Corona Municipal (L66)

Coordinates

Not recorded

Aircraft

Grumman AA-5B

Registration

N74463

Category

Airplane

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Route

Corona → Fullerton

Aircraft damage

Destroyed

Weather

VMC

Light

Day

NTSB number

LAX85FA078

2 people were seriously injured.

The NTSB has not published a probable cause for this record. No probable cause statement is present in the source data.

Nothing about the cause is stated here that is not in the source record.

Read the full NTSB narrative

DURING MAINT OF THE ENG, & JUST BEFORE THE ANNUAL INSPECTION WAS SIGNED OFF, SOMEONE PARTIALLY LOOSENED & THEN ATTEMPTED TO TIGHTEN THE BOLT SECURING THE CRANKSHAFT GEAR TO THE CRANKSHAFT. THE OLD LOCKPLATE WAS NOT REPLACED & WAS NOT PROPERLY SECURED ABOUT THE BOLT. AS A RESULT OF A LOOSE BOLT THE DOWEL PIN, ALIGNING THE GEAR WITH THE CRANKSHAFT, THE GEAR SHIFTED POSITION & THE ENGINE STOPPED. THE PLT FAILED TO LOWER THE WING FLAPS, & STRUCK A DIRT DITCH SHORT OF HIS INTENDED EMERG LANDING SITE.

Quoted verbatim from the NTSB record.