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Test flight activity by flight crew who issues disclaimers reference flight crew qualifications. Temporary loss of aircraft control as aircraft gets into a full stall condition. Altitude deviation altitude excursion.
| Attributes | |
| ACN | 243194 |
| Time | |
| Date | 199306 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : mco |
| State Reference | FL |
| Altitude | msl bound lower : 14000 msl bound upper : 15000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | cruise other cruise other |
| Route In Use | enroute airway : zma |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 11000 flight time type : 4000 |
| ASRS Report | 243194 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : second officer |
| Qualification | pilot : atp pilot : flight engineer pilot : cfi |
| Experience | flight time last 90 days : 20 flight time total : 6000 flight time type : 1000 |
| ASRS Report | 243204 |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : regained aircraft control flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation other |
Narrative:
During a test flight of an large transport after completion of a 'C' check, one of our maneuvers is a test of the stick shaker stall warning system. We figured the stall shaker to occur at 161 KTS for our weight. Our test manual calls for idle power or power to hold altitude. I had power at idle detent for 2-3 mins to decelerate to 161 KTS. At 159 KTS with no stick shaker, we started to get buffet. I pushed the throttles up to go around power. We had no acceleration for 7-10 seconds. Full stall occurred and I dropped the nose to recover. We lost about 1000 ft. We told ZMA we had a problem and reported when back at 15000 ft. We will change the test guide to read power (55Y N1 minimum) to be set prior to test. We should have gotten a block altitude 13000-15000 ft. We will recommend that a test pilot group do all post 'C' check test.
Original NASA ASRS Text
Title: TEST FLT ACTIVITY BY FLC WHO ISSUES DISCLAIMERS REF FLC QUALIFICATIONS. TEMPORARY LOSS OF ACFT CTL AS ACFT GETS INTO A FULL STALL CONDITION. ALTDEV ALT EXCURSION.
Narrative: DURING A TEST FLT OF AN LGT AFTER COMPLETION OF A 'C' CHK, ONE OF OUR MANEUVERS IS A TEST OF THE STICK SHAKER STALL WARNING SYS. WE FIGURED THE STALL SHAKER TO OCCUR AT 161 KTS FOR OUR WT. OUR TEST MANUAL CALLS FOR IDLE PWR OR PWR TO HOLD ALT. I HAD PWR AT IDLE DETENT FOR 2-3 MINS TO DECELERATE TO 161 KTS. AT 159 KTS WITH NO STICK SHAKER, WE STARTED TO GET BUFFET. I PUSHED THE THROTTLES UP TO GAR PWR. WE HAD NO ACCELERATION FOR 7-10 SECONDS. FULL STALL OCCURRED AND I DROPPED THE NOSE TO RECOVER. WE LOST ABOUT 1000 FT. WE TOLD ZMA WE HAD A PROB AND RPTED WHEN BACK AT 15000 FT. WE WILL CHANGE THE TEST GUIDE TO READ PWR (55Y N1 MINIMUM) TO BE SET PRIOR TO TEST. WE SHOULD HAVE GOTTEN A BLOCK ALT 13000-15000 FT. WE WILL RECOMMEND THAT A TEST PLT GROUP DO ALL POST 'C' CHK TEST.
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.