Casualties unknown

1988-10-24: Airbus Industrie A-300-600R (N70054) — American Airlines, Inc. — San Juan, PR

San Juan, PR, US

On October 24, 1988, an Airbus Industrie A-300-600R (registration N70054) operated by American Airlines, Inc. was involved in an aviation accident near San Juan, PR. Investigators recorded the probable cause as: The band clamps securing the high pressure bleed valve to the engine were undertorqued during installation, causing the premature separation of the bleed valve. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 8 related events involving the same aircraft type or operator are linked below.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 1781061362Data APIEditorial standards
Aircraft registered N70054
Aircraft registered N70054. Photo: Eduard Marmet / CC BY-SA 3.0, via Wikimedia Commons

An aircraft departed runway 8 at 1810 AST and reported a right engine fire. It landed five minutes later, and all passengers evacuated via slides. Maintenance had replaced the #2 high pressure bleed valve; post-incident examination found band clamps were undertorqued.

Incident Overview

At 1810 AST, an aircraft departed from runway 8. Shortly after takeoff, the pilot reported a right engine fire and declared an emergency. The aircraft landed safely at 1815 AST, exited the runway, and all passengers were evacuated using the emergency slides.

Maintenance Background

According to maintenance personnel in San Juan, the number 2 high pressure bleed valve in the right engine had been replaced prior to the departure. The bleed valve is a component that regulates engine bleed air.

Post-Incident Examination

Following the incident, an examination of the replaced bleed valve was conducted. The inspection revealed that the band clamps securing the bleed valve to the engine were undertorqued during installation. This condition allowed the bleed valve to separate from the engine prematurely, leading to the reported fire.

Aftermath

The aircraft was removed from service for further investigation and repairs. No further details have been released regarding the aircraft model, registration, or operator.

Probable cause

The band clamps securing the high pressure bleed valve to the engine were undertorqued during installation, causing the premature separation of the bleed valve.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001213X27108. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.