 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Flight crew of air carrier medium large transport aircraft returned to land due to a fire warning indication resulting in landing overweight.
| Attributes | |
| ACN | 226739 |
| Time | |
| Date | 199211 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : mex |
| State Reference | FO |
| Altitude | msl bound lower : 14000 msl bound upper : 14000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dawn |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute airway : mmex |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : instrument pilot : flight engineer pilot : commercial |
| Experience | flight time last 90 days : 204 flight time total : 9200 flight time type : 630 |
| ASRS Report | 226739 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 198 flight time total : 3900 flight time type : 400 |
| ASRS Report | 226733 |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : far non adherence other other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : declared emergency other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
After takeoff from mexico city, destination sfo, as we transitioned to climb phase, fire warning light, APU fire handle light came on and fire bell sounded. We performed flight handbook procedure (pulled APU fire handle, rotated handle to discharge APU fire extinguisher bottle). APU fire handle light went out. No other fire indications. We continued to climb while evaluating situation. Tested fire warning lights. All tested good. We reviewed our options, sent ACARS message to our company dispatch, returned to mexico city for landing as a precaution. Overweight landing at mexico city. Even though fire warning light was out, we judged the best/safest course of action was to land over maximum allowable landing weight. Overweight landing was recorded in aircraft logbook. Required inspection was completed by our airline maintenance personnel in mexico city. Exceeded maximum landing weight by approximately 1000 pounds. No indication of actual APU fire or overheat was discovered.
Original NASA ASRS Text
Title: FLC OF ACR MLG ACFT RETURNED TO LAND DUE TO A FIRE WARNING INDICATION RESULTING IN LNDG OVERWT.
Narrative: AFTER TKOF FROM MEXICO CITY, DEST SFO, AS WE TRANSITIONED TO CLB PHASE, FIRE WARNING LIGHT, APU FIRE HANDLE LIGHT CAME ON AND FIRE BELL SOUNDED. WE PERFORMED FLT HANDBOOK PROC (PULLED APU FIRE HANDLE, ROTATED HANDLE TO DISCHARGE APU FIRE EXTINGUISHER BOTTLE). APU FIRE HANDLE LIGHT WENT OUT. NO OTHER FIRE INDICATIONS. WE CONTINUED TO CLB WHILE EVALUATING SITUATION. TESTED FIRE WARNING LIGHTS. ALL TESTED GOOD. WE REVIEWED OUR OPTIONS, SENT ACARS MESSAGE TO OUR COMPANY DISPATCH, RETURNED TO MEXICO CITY FOR LNDG AS A PRECAUTION. OVERWT LNDG AT MEXICO CITY. EVEN THOUGH FIRE WARNING LIGHT WAS OUT, WE JUDGED THE BEST/SAFEST COURSE OF ACTION WAS TO LAND OVER MAX ALLOWABLE LNDG WT. OVERWT LNDG WAS RECORDED IN ACFT LOGBOOK. REQUIRED INSPECTION WAS COMPLETED BY OUR AIRLINE MAINT PERSONNEL IN MEXICO CITY. EXCEEDED MAX LNDG WT BY APPROX 1000 POUNDS. NO INDICATION OF ACTUAL APU FIRE OR OVERHEAT WAS DISCOVERED.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.