Skip to content

LAX90IA101

1990-02-18 · LOS ANGELES, California, United States · Minor · 1 aircraft · Status: Completed

Airport LAX

N31013 has since been reassigned. It is now registered to a different aircraft (CAMERON BALLOONS US XT-77), which was not involved in this event.

Aircraft involved

Probable cause & findings

THE FAILURE OF THE WELD HOLDING THE SLIP JOINT TO THE PNEUMATIC DUAL COMPENSATOR FROM THE NO. 2 ENGINE.

Factual narrative

THE WELD AT A SLIP JOINT TO THE PNEUMATIC DUAL COMPENSATOR FOR THE NO. 2 ENGINE ON A LOCKHEED L-1011-385-1 SEPARATED IN THE MID-CARGO COMPARTMENT AREA. THAT BLEED AIR FROM THE ENGINE ACTIVATED THE FIRE WARNING LASP CIRCUITY IN THE AREA ALERTING THE CREW. THIS IS THE THIRD KNOWN SEPARATION OF THIS UNIT. THESE ITEMS ARE ON THE C-PHASE INSPECTION. TWO SERVICE BULLETINS WERE ISSUED IN 1978 AND REVISED IN 1984 (SB09336-041). Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1990_LAX90IA101.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

Search this event elsewhere

External sources are reported, not agency: signal that something happened, not fact about what happened.