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Return land of a cargo MD11 mandated when the flight crew experiences a loss of reliability of their instrument readings after departure from anc, ak.
| Attributes | |
| ACN | 561056 |
| Time | |
| Date | 200209 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| State Reference | AK |
| Altitude | msl bound lower : 4000 msl bound upper : 5000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : a11.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | MD-11 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other other vortac |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 100 flight time total : 10000 flight time type : 400 |
| ASRS Report | 561056 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : inst panel other flight crewa other flight crewb |
| Resolutory Action | flight crew : landed in emergency condition flight crew : exited adverse environment flight crew : diverted to another airport flight crew : declared emergency |
| Consequence | faa : reviewed incident with flight crew other other |
| Supplementary | |
| Problem Areas | Weather Aircraft Flight Crew Human Performance |
| Primary Problem | Aircraft |
Narrative:
First officer lost reliable instrument readings. Not knowing if the capts had failed deviated from altitude to remain VMC, 5000 ft to 4000 ft. Discovered first officer readings were unreliable and, suspecting that captain's were not doing that great, declared emergency and landed back at anchorage. Talked with departure control on landing and was informed there was no problem.
Original NASA ASRS Text
Title: RETURN LAND OF A CARGO MD11 MANDATED WHEN THE FLC EXPERIENCES A LOSS OF RELIABILITY OF THEIR INST READINGS AFTER DEP FROM ANC, AK.
Narrative: FO LOST RELIABLE INST READINGS. NOT KNOWING IF THE CAPTS HAD FAILED DEVIATED FROM ALT TO REMAIN VMC, 5000 FT TO 4000 FT. DISCOVERED FO READINGS WERE UNRELIABLE AND, SUSPECTING THAT CAPT'S WERE NOT DOING THAT GREAT, DECLARED EMER AND LANDED BACK AT ANCHORAGE. TALKED WITH DEP CTL ON LNDG AND WAS INFORMED THERE WAS NO PROB.
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.