|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1801 To 2400|
|Locale Reference||airport : zzz.airport|
|Altitude||msl single value : 800|
|Controlling Facilities||tower : mqy.tower|
|Operator||general aviation : personal|
|Make Model Name||SR22|
|Operating Under FAR Part||Part 91|
|Flight Phase||descent : approach|
|Function||flight crew : single pilot|
|Qualification||pilot : private|
|Experience||flight time last 90 days : 10|
flight time total : 150
flight time type : 65
|Anomaly||aircraft equipment problem : critical|
|Independent Detector||other flight crewa|
|Resolutory Action||none taken : anomaly accepted|
I had turned on final for landing. After I put in 100 percent flaps; I heard a pop sound. Plane flew normally and I landed. I retracted the flaps and noticed a slight angle difference with the wing. I extended flaps 50 and 100 percent. Flaps extended and retracted. When I felt the flaps; there appeared to be a small amount of play. I had the mechanic check the flaps and they determined electric flap motor had come loose from the mounting bracket. Cirrus design was contacted.callback conversation with reporter revealed the following information: reporter stated that after landing; noticed left and right flap trailing edges did not look fully faired. Pushed down on trailing edge and flaps seemed to pull away from wing. Maintenance found the mounting bracket that is chemically bonded to the aircraft structure; had completely separated. The flap electric drive motor is mounted to this bracket. The reporter also stated he heard noises under him from the lower fuselage when flaps were moved. After the support bracket had been re-bonded; drooping flap trailing edges were noticed again after landing. Reporter extended the flaps to 100 percent position; but flaps would not retract.
Original NASA ASRS Text
Title: A CIRRUS SR22 PLT RPTS HEARING A 'POP' SOUND AFTER 100 PERCENT FLAPS SELECTED ON FINAL FOR LNDG. MAINT NOTED ELECTRIC FLAP MOTOR HAD COME LOOSE FROM THE MOUNTING BRACKET.
Narrative: I HAD TURNED ON FINAL FOR LNDG. AFTER I PUT IN 100 PERCENT FLAPS; I HEARD A POP SOUND. PLANE FLEW NORMALLY AND I LANDED. I RETRACTED THE FLAPS AND NOTICED A SLIGHT ANGLE DIFFERENCE WITH THE WING. I EXTENDED FLAPS 50 AND 100 PERCENT. FLAPS EXTENDED AND RETRACTED. WHEN I FELT THE FLAPS; THERE APPEARED TO BE A SMALL AMOUNT OF PLAY. I HAD THE MECHANIC CHECK THE FLAPS AND THEY DETERMINED ELECTRIC FLAP MOTOR HAD COME LOOSE FROM THE MOUNTING BRACKET. CIRRUS DESIGN WAS CONTACTED.CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED THAT AFTER LNDG; NOTICED LEFT AND RIGHT FLAP TRAILING EDGES DID NOT LOOK FULLY FAIRED. PUSHED DOWN ON TRAILING EDGE AND FLAPS SEEMED TO PULL AWAY FROM WING. MAINT FOUND THE MOUNTING BRACKET THAT IS CHEMICALLY BONDED TO THE ACFT STRUCTURE; HAD COMPLETELY SEPARATED. THE FLAP ELECTRIC DRIVE MOTOR IS MOUNTED TO THIS BRACKET. THE RPTR ALSO STATED HE HEARD NOISES UNDER HIM FROM THE LOWER FUSELAGE WHEN FLAPS WERE MOVED. AFTER THE SUPPORT BRACKET HAD BEEN RE-BONDED; DROOPING FLAP TRAILING EDGES WERE NOTICED AGAIN AFTER LNDG. RPTR EXTENDED THE FLAPS TO 100 PERCENT POSITION; BUT FLAPS WOULD NOT RETRACT.
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.