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B747-200 crew had an engine egt overtemp after landing when the thrust reverser did not stow into the forward thrust position.
| Attributes | |
| ACN | 548700 |
| Time | |
| Date | 200205 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : anc.airport |
| State Reference | AK |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : lbe.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B747-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : taxi |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : commercial pilot : instrument pilot : multi engine pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 125 flight time total : 24000 flight time type : 15000 |
| ASRS Report | 545700 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : company policies non adherence : far non adherence : published procedure other anomaly other |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | none taken : detected after the fact none taken : anomaly accepted other |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance |
| Primary Problem | Aircraft |
Narrative:
After normal landing and rollout, we exited runway 6L. All thrust reversers indicated closed and locked with temperatures normal. As I attempted to advance #4 throttle for forward thrust, I noted that the throttle was frozen and would not move. The so then noticed an ongoing overtemp on the #4 engine. We shut it down and motored it when it was below 20% N2 when we checked the abnormal numbers, they indicated 682 degrees for 27 seconds/CAT B on #4 engine. When we parked we discovered that the #4 thrust reverser was still partially open with no amber or green indication lights. Other than the overtemp spike, we had no other thrust reverser lights.
Original NASA ASRS Text
Title: B747-200 CREW HAD AN ENG EGT OVERTEMP AFTER LNDG WHEN THE THRUST REVERSER DID NOT STOW INTO THE FORWARD THRUST POS.
Narrative: AFTER NORMAL LNDG AND ROLLOUT, WE EXITED RWY 6L. ALL THRUST REVERSERS INDICATED CLOSED AND LOCKED WITH TEMPS NORMAL. AS I ATTEMPTED TO ADVANCE #4 THROTTLE FOR FORWARD THRUST, I NOTED THAT THE THROTTLE WAS FROZEN AND WOULD NOT MOVE. THE SO THEN NOTICED AN ONGOING OVERTEMP ON THE #4 ENG. WE SHUT IT DOWN AND MOTORED IT WHEN IT WAS BELOW 20% N2 WHEN WE CHKED THE ABNORMAL NUMBERS, THEY INDICATED 682 DEGS FOR 27 SECONDS/CAT B ON #4 ENG. WHEN WE PARKED WE DISCOVERED THAT THE #4 THRUST REVERSER WAS STILL PARTIALLY OPEN WITH NO AMBER OR GREEN INDICATION LIGHTS. OTHER THAN THE OVERTEMP SPIKE, WE HAD NO OTHER THRUST REVERSER LIGHTS.
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.