 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Air carrier medium large transport aircraft's takeoff warning horn came on intermittently while in the air and could not be silenced.
| Attributes | |
| ACN | 218408 |
| Time | |
| Date | 199208 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : den |
| State Reference | CO |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Qualification | other other : other |
| ASRS Report | 218408 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : less severe other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
Air carrier aircraft arrived denver with logbook item stating takeoff warning horn sounded in flight and cannot be silenced. Found aircraft in ground mode on arrival. Unable to duplicate. Changed 2 relays R276 and R282 precautionary. Dispatched aircraft. Aircraft again had takeoff warning. All procedures were followed. My suggestion to eliminate this problem is to jack aircraft when false ground shift is a problem. The air carrier maintenance manual does not call this out. Callback conversation with reporter revealed the following information: reporter stated that the problem was the landing gear-up lock adjustment. No further problems have been experienced.
Original NASA ASRS Text
Title: ACR MLG ACFT'S TKOF WARNING HORN CAME ON INTERMITTENTLY WHILE IN THE AIR AND COULD NOT BE SILENCED.
Narrative: ACR ACFT ARRIVED DENVER WITH LOGBOOK ITEM STATING TKOF WARNING HORN SOUNDED IN FLT AND CANNOT BE SILENCED. FOUND ACFT IN GND MODE ON ARR. UNABLE TO DUPLICATE. CHANGED 2 RELAYS R276 AND R282 PRECAUTIONARY. DISPATCHED ACFT. ACFT AGAIN HAD TKOF WARNING. ALL PROCS WERE FOLLOWED. MY SUGGESTION TO ELIMINATE THIS PROBLEM IS TO JACK ACFT WHEN FALSE GND SHIFT IS A PROBLEM. THE ACR MAINT MANUAL DOES NOT CALL THIS OUT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED THAT THE PROBLEM WAS THE LNDG GEAR-UP LOCK ADJUSTMENT. NO FURTHER PROBLEMS HAVE BEEN EXPERIENCED.
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.