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Atlas / NTSB / LAX85FA130

NTSB CAROL · Event

Event LAX85FA130

1985-01-31 BISHOP, California, United States Airport · BIH None 1 aircraft Status: Completed

Registry · N2129G

FAA Aircraft Registry record.

Make / Model

PIPER PA-32RT-300T

Year of manufacture

1978 · 7 years old at event

Engine

LYCOMING TI0-540 SER (310 hp)

Seats / Engines

7 seats · 1 engine

Last airworthiness date

19781219

ADS-B equipped

Yes — Mode-S A1C48A

Registrant of record

NORTH CENTRAL MARKETING INC

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Factual narrative

THE PLT RPTD THAT SHORTLY AFTER LEVELING OFF AT 11500 FT MSL, THE ENGINE EXPLODED CAUSING BOTH WINDSCREENS TO BE COVERED WITH OIL AND FIRE. THE FIRE STOPPED DURING THE EMERGENCY DESCENT. THE ACFT LANDED ON RY 30 AT BISHOP ARPT, BISHOP, CA WITHOUT FURTHER INCIDENT. DISASSEMBLY EXAMINATION OF THE ENGINE REVEALED CRANKSHAFT FAILED AT THE SHORT CHEEK BETWEEN THE NO. 3 MAIN JOURNAL & THE NO. 4 CRANKPIN. THE NOS. 3 & 4 CONNECTING RODS & CAMSHAFT WERE FRACTURED. THE PISTONS SHOWED NO EVIDENCE OF ANY DETONATION. THE BACKSIDE OF THE CON RODS, MAIN JOURNAL BEARINGS & BOTH HALVES OF THE CRANKCASE SHOWED EXTENSIVE FRETTING SIGNATURES INDICATING MISALIGNMENT DURING MANUFACTURE. METALLURGICAL EXAMINATION REVEALED THE CRANKSHAFT FAILED IN FATIGUE. ALL OTHER FRACTURES WERE OVERLOAD SUBSEQUENT TO THE CRANKSHAFT FAILURE. THE ENGINE HAD ACCUMULATED 602 FLT HOURS SINCE NEW. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1985_LAX85FA130.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.