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LAX86LA351

1986-09-15 · PORTERVILLE, California, United States · None · 1 aircraft · Status: Completed

Airport PTV

Aircraft involved

Factual narrative

AFTER A NORMAL LANDING THE PILOT SAID HE BEGAN TO APPLY MODERATE BRAKE PRESSURE TO MAKE THE MID-FIELD TAXIWAY TURN OFF AND FELT WHAT HE DESCRIBED AS 'A LIGHT JERK IN THE LEFT GEAR' FOLLOWED BY A 'SNAPPING SOUND WHICH OCCURRED TWO OR THREE TIMES.' THE PILOT THEN SAID THE LEFT BRAKE FAILED COMPLETELY AND THE 'AIRCRAFT VEERED TO THE RIGHT AND ENTERED A GROUND LOOP.' EXAMINATION OF THE LEFT BRAKE REVEALED THAT THE LEFT BRAKE DISC DRIVE KEY RETAINING SCREW FAILED, WHICH ALLOWED THE KEY TO FLOAT LOOSE IN THE BRAKE HOUSING. THE MECHANIC WHO EXAMINED THE BRAKE SYSTEM STATED THAT THE LOOSE KEY 'BROKE OUT THE LOWER PART OF THE HOUSING ALLOWING THE BRAKE LINING TO FALL OUT.' Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1986_LAX86LA351.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

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