ASN Wikibase Occurrence # 369084
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Tuesday 14 March 1989 |
| Time: | 11:12 LT |
| Type: |  Boeing 727-232 |
| Owner/operator: | Delta Air Lines |
| Registration: | N511DA |
| MSN: | 21313/1347 |
| Year of manufacture: | 1978 |
| Total airframe hrs: | 35431 hours |
| Engine model: | P&W JT8D-15 |
| Fatalities: | Fatalities: 0 / Occupants: 98 |
| Aircraft damage: | None |
| Category: | Serious incident |
| Location: | Greenville, TX -
 United States of America
|
| Phase: | En route |
| Nature: | Passenger - Scheduled |
| Departure airport: | Atlanta Hartsfield-Jackson International Airport, GA (ATL/KATL) |
| San Diego International Airport, CA (SAN/KSAN) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
ACFT MADE A PRECAUTIONARY LANDING AFTER GETTING A FIRE WARNING INDICATION IN THE #2 ENG. INITIALLY THE INDICATIONS, BOTH THE FIRE WARNING LIGHT AND BELL, WERE INTERMITTENT; HOWEVER, THEY THEN WENT TO STEADY AND THE CREW SECURED THE ENG AND DISCHARGED BOTH FIRE BOTTLES WITH NO EFFECT. INVESTIGATION REVEALED THAT THERE HAD NOT BEEN A FIRE OR OVER TEMP CONDITION AND THAT THE ENGINE FIRE DETECTION LOOP WAS SHORTED OUT ON BOTH ELEMENTS. CONTAMINANTS WERE FOUND ON THE CONNECTORS AND PINS OF ONE END OF THE LOOP DURING INITIAL INSP. AFTER HANDLING AND SHIPMENT TO THE OPERATOR'S MAINTENANCE FACILITY, THE SHORT DISAPPEARED AND COULD NOT BE DUPLICATED. LOOP MET ALL MANUFACTURERING SPECIFICATIONS AND FUNCTIONED NORMALLY DURING ALL TESTING. CONTAMINANTS APPEARED TO BE ENGINE OIL AND HYDRAULIC FLUID. NO DETERMINATION WAS MADE ABOUT HOW OR WHEN THE CONTAMINANTS WERE INTRODUCED TO THE HERMETICALLY SEALED CONNECTORS.
Probable Cause: FALSE FIRE WARNING, WHICH RESULTED FROM (1) CONTAMINANTS ON HARDWARE AT ONE END OF THE FIRE DETECTION LOOP; AND (2) AN ELECTRICAL SHORT ON BOTH ELEMENTS OF THE LOOP.
Accident investigation:
 |
|
Sources:
NTSB FTW89IA067
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Mar-2024 10:39 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation