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A C550 on takeoff climb on gear retraction the landing gear warning horn sounded and could not be silenced. Flaps moved to up and flap indicator did not move. Gear extended; flaps to 15 degree horn silenced. Return to departure airport.
| Attributes | |
| ACN | 688865 |
| Time | |
| Date | 200602 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : abq.airport |
| State Reference | NM |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : abq.tracon |
| Operator | other |
| Make Model Name | Citation II S2/Bravo |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : takeoff ground : takeoff roll |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : commercial pilot : atp pilot : cfi pilot : instrument pilot : multi engine |
| Experience | flight time last 90 days : 60 flight time total : 16000 flight time type : 70 |
| ASRS Report | 688865 |
| Person 2 | |
| Affiliation | government other |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | other |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
A flaps 15 degree takeoff was made on runway 8. Takeoff was normal. When the landing gear was retracted; the landing gear warning horn sounded and could not be silenced. The flap lever was moved to the 'up' position. The flap indicator did not move; and the warning horn continued to sound. The flap handle was returned to the flaps 15 degree position; and the landing gear was extended; silencing the horn. The flaps inoperative checklist was accomplished. ILS approach to runway 3 was initiated; the flap handle was moved to the landing position; the flaps extended fully; with the indicator so indicating. A normal landing was made. Flaps would not retract during after landing check. Callback conversation with reporter revealed the following information: the reporter stated the cause of the trailing edge flaps to retract was a failed flap bearing that was cracked and frozen; adding this was his first experience in this airplane with a trailing edge flap failure. The reporter indicated the flap fail checklist worked as advertised.
Original NASA ASRS Text
Title: A C550 ON TKOF CLB ON GEAR RETRACTION THE LNDG GEAR WARNING HORN SOUNDED AND COULD NOT BE SILENCED. FLAPS MOVED TO UP AND FLAP INDICATOR DID NOT MOVE. GEAR EXTENDED; FLAPS TO 15 DEG HORN SILENCED. RETURN TO DEP ARPT.
Narrative: A FLAPS 15 DEG TKOF WAS MADE ON RWY 8. TKOF WAS NORMAL. WHEN THE LNDG GEAR WAS RETRACTED; THE LNDG GEAR WARNING HORN SOUNDED AND COULD NOT BE SILENCED. THE FLAP LEVER WAS MOVED TO THE 'UP' POS. THE FLAP INDICATOR DID NOT MOVE; AND THE WARNING HORN CONTINUED TO SOUND. THE FLAP HANDLE WAS RETURNED TO THE FLAPS 15 DEG POS; AND THE LNDG GEAR WAS EXTENDED; SILENCING THE HORN. THE FLAPS INOP CHKLIST WAS ACCOMPLISHED. ILS APCH TO RWY 3 WAS INITIATED; THE FLAP HANDLE WAS MOVED TO THE LNDG POS; THE FLAPS EXTENDED FULLY; WITH THE INDICATOR SO INDICATING. A NORMAL LNDG WAS MADE. FLAPS WOULD NOT RETRACT DURING AFTER LNDG CHK. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE CAUSE OF THE TRAILING EDGE FLAPS TO RETRACT WAS A FAILED FLAP BEARING THAT WAS CRACKED AND FROZEN; ADDING THIS WAS HIS FIRST EXPERIENCE IN THIS AIRPLANE WITH A TRAILING EDGE FLAP FAILURE. THE RPTR INDICATED THE FLAP FAIL CHKLIST WORKED AS ADVERTISED.
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.