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An amateur homebuilt biplane in cruise at 9500 ft declared an emergency and diverted due to right aileron hinge failure.
| Attributes | |
| ACN | 440465 |
| Time | |
| Date | 199906 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl single value : 9500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : zzz.tracon tower : ict.tower |
| Operator | general aviation : personal |
| Make Model Name | Experimental |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Flight Plan | None |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : multi engine pilot : flight engineer pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 200 flight time total : 11000 flight time type : 10 |
| ASRS Report | 440465 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : published procedure other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : diverted to another airport flight crew : declared emergency |
| Consequence | other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Aircraft |
| Primary Problem | Aircraft |
Narrative:
Aileron hinge broke, causing right roll tendency. Aircraft was ctlable and an uneventful landing was made. Callback conversation with reporter revealed the following information: the reporter stated the aircraft was a popular home built biplane used for acrobatics. The reporter said he was not the builder of the aircraft. The reporter said the loss of the right aileron required heavy pressure on the left aileron to keep the airplane in control. The reporter stated that at one point, serious thought was given to jumping, as control for landing was minimum. The reporter said he elected to land at ZZZ international as the runway was 150 ft wide. The reporter said the builder used a hinge of his own design by welding a standard bolt to a plate fastened to the aileron, the bolt being the hinge pin. The reporter said the pin was undersized and failed.
Original NASA ASRS Text
Title: AN AMATEUR HOMEBUILT BIPLANE IN CRUISE AT 9500 FT DECLARED AN EMER AND DIVERTED DUE TO R AILERON HINGE FAILURE.
Narrative: AILERON HINGE BROKE, CAUSING R ROLL TENDENCY. ACFT WAS CTLABLE AND AN UNEVENTFUL LNDG WAS MADE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE ACFT WAS A POPULAR HOME BUILT BIPLANE USED FOR ACROBATICS. THE RPTR SAID HE WAS NOT THE BUILDER OF THE ACFT. THE RPTR SAID THE LOSS OF THE R AILERON REQUIRED HVY PRESSURE ON THE L AILERON TO KEEP THE AIRPLANE IN CTL. THE RPTR STATED THAT AT ONE POINT, SERIOUS THOUGHT WAS GIVEN TO JUMPING, AS CTL FOR LNDG WAS MINIMUM. THE RPTR SAID HE ELECTED TO LAND AT ZZZ INTL AS THE RWY WAS 150 FT WIDE. THE RPTR SAID THE BUILDER USED A HINGE OF HIS OWN DESIGN BY WELDING A STANDARD BOLT TO A PLATE FASTENED TO THE AILERON, THE BOLT BEING THE HINGE PIN. THE RPTR SAID THE PIN WAS UNDERSIZED AND FAILED.
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.