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Diversion by a B757-200 flight crew when the reverser annunciator warning alerts them to a possible unlocked condition.
| Attributes | |
| ACN | 614457 |
| Time | |
| Date | 200404 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : zzz.artcc |
| State Reference | US |
| Altitude | msl single value : 39000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc tower : egll.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument pilot : multi engine |
| ASRS Report | 614457 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 613454 |
| Events | |
| Anomaly | aircraft equipment problem : less severe non adherence : company policies non adherence : published procedure |
| Independent Detector | aircraft equipment other aircraft equipment : reverser aunnunciator other flight crewa other flight crewb |
| Resolutory Action | controller : issued new clearance flight crew : landed as precaution flight crew : diverted to another airport flight crew : declared emergency |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Aircraft Company Flight Crew Human Performance |
| Primary Problem | Ambiguous |
Narrative:
While at cruise a right engine amber 'thrust reverser unlocked' annunciated. No other abnormal indications were noted. The QRH procedure states that if no yaw, loss of airspeed or buffet, operate engine normally. The captain chose to take a more conservative approach, and to divert to ZZZ. Because ATC would not give us a clearance out of altitude without declaring an emergency, one was declared and an uneventful landing was made.
Original NASA ASRS Text
Title: DIVERSION BY A B757-200 FLT CREW WHEN THE REVERSER ANNUNCIATOR WARNING ALERTS THEM TO A POSSIBLE UNLOCKED CONDITION.
Narrative: WHILE AT CRUISE A R ENG AMBER 'THRUST REVERSER UNLOCKED' ANNUNCIATED. NO OTHER ABNORMAL INDICATIONS WERE NOTED. THE QRH PROC STATES THAT IF NO YAW, LOSS OF AIRSPD OR BUFFET, OPERATE ENG NORMALLY. THE CAPT CHOSE TO TAKE A MORE CONSERVATIVE APCH, AND TO DIVERT TO ZZZ. BECAUSE ATC WOULD NOT GIVE US A CLRNC OUT OF ALT WITHOUT DECLARING AN EMER, ONE WAS DECLARED AND AN UNEVENTFUL LNDG WAS MADE.
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.