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|
Attributes | |
ACN | 691506 |
Time | |
Date | 200603 |
Local Time Of Day | 1801 To 2400 |
Place | |
Locale Reference | airport : zzz.airport |
State Reference | US |
Altitude | msl single value : 25000 |
Environment | |
Flight Conditions | IMC |
Light | Night |
Aircraft 1 | |
Controlling Facilities | artcc : zzz.artcc |
Operator | general aviation : corporate |
Make Model Name | PA-31T-1 Cheyenne I |
Operating Under FAR Part | Part 91 |
Flight Phase | cruise : level |
Flight Plan | IFR |
Person 1 | |
Affiliation | company : corporate |
Function | flight crew : single pilot |
Qualification | pilot : cfi pilot : commercial |
Experience | flight time last 90 days : 25 flight time total : 1575 flight time type : 150 |
ASRS Report | 691506 |
Person 2 | |
Affiliation | government : faa |
Function | controller : radar |
Events | |
Anomaly | aircraft equipment problem : critical altitude deviation : excursion from assigned altitude other anomaly |
Independent Detector | other flight crewa |
Resolutory Action | controller : provided flight assist flight crew : declared emergency flight crew : regained aircraft control flight crew : diverted to another airport |
Supplementary | |
Problem Areas | Aircraft |
Primary Problem | Aircraft |
Narrative:
On IFR flight; center gave me pilot's discretion to FL240. I had the autoplt on and when I looked over to check and see what distance I was from ZZZ1 and looked back at the attitude indicator. I noticed that the airplane was in a steep turn with an extreme nose down pitch attitude. At this point; I was in an unusual attitude and instantly brought back the throttles to slow the plane down. I told center that I was declaring an emergency and that I had lost my attitude indicator and needed assistance. My attitude indicator at this time was tumbling and I looked over to check my back-up attitude indicator and it was also tumbling. Once I realized that I had lost both attitude indicators; I focused on leveling the wings and pitching up and was able to get the airplane back under control. I leveled the plane out at about 10000 ft MSL. I told center that I had control of the plane and that I had lost both attitude indicators and asked for assistance to the nearest airport. Center instructed me that ZZZ2 was close by and gave me runway length and airport elevation. I told center that I was going to land there and that I would call to cancel my IFR flight plan with the FSS department when I was on the ground; which I did.
Original NASA ASRS Text
Title: PA-31T AT FL250 ENTERED AN UNUSUAL ATTITUDE AFTER LOSING BOTH ATTITUDE INDICATORS. EMER WAS DECLARED AND A LNDG WAS MADE AT THE NEAREST SUITABLE ARPT.
Narrative: ON IFR FLT; CTR GAVE ME PLT'S DISCRETION TO FL240. I HAD THE AUTOPLT ON AND WHEN I LOOKED OVER TO CHK AND SEE WHAT DISTANCE I WAS FROM ZZZ1 AND LOOKED BACK AT THE ATTITUDE INDICATOR. I NOTICED THAT THE AIRPLANE WAS IN A STEEP TURN WITH AN EXTREME NOSE DOWN PITCH ATTITUDE. AT THIS POINT; I WAS IN AN UNUSUAL ATTITUDE AND INSTANTLY BROUGHT BACK THE THROTTLES TO SLOW THE PLANE DOWN. I TOLD CTR THAT I WAS DECLARING AN EMER AND THAT I HAD LOST MY ATTITUDE INDICATOR AND NEEDED ASSISTANCE. MY ATTITUDE INDICATOR AT THIS TIME WAS TUMBLING AND I LOOKED OVER TO CHK MY BACK-UP ATTITUDE INDICATOR AND IT WAS ALSO TUMBLING. ONCE I REALIZED THAT I HAD LOST BOTH ATTITUDE INDICATORS; I FOCUSED ON LEVELING THE WINGS AND PITCHING UP AND WAS ABLE TO GET THE AIRPLANE BACK UNDER CTL. I LEVELED THE PLANE OUT AT ABOUT 10000 FT MSL. I TOLD CTR THAT I HAD CTL OF THE PLANE AND THAT I HAD LOST BOTH ATTITUDE INDICATORS AND ASKED FOR ASSISTANCE TO THE NEAREST ARPT. CTR INSTRUCTED ME THAT ZZZ2 WAS CLOSE BY AND GAVE ME RWY LENGTH AND ARPT ELEVATION. I TOLD CTR THAT I WAS GOING TO LAND THERE AND THAT I WOULD CALL TO CANCEL MY IFR FLT PLAN WITH THE FSS DEPT WHEN I WAS ON THE GND; WHICH I DID.
Data retrieved from NASA's ASRS site as of January 2009 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.