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Pilot of an small transport twin engine private aircraft declared an emergency and diverted to a VFR airport based on an unusual aircraft vibration which was found after inspection to be caused by the wing flaps out of 'rig.'
| Attributes | |
| ACN | 260059 |
| Time | |
| Date | 199312 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : sat |
| State Reference | TX |
| Altitude | agl bound lower : 0 agl bound upper : 6500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zhu tower : ama |
| Operator | general aviation : personal |
| Make Model Name | Small Transport, Low Wing, 2 Recip Eng |
| Flight Phase | cruise other descent other |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : atp pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 30 flight time total : 20000 flight time type : 10 |
| ASRS Report | 260059 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : declared emergency other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
Departed brazorio VFR intending to proceed to alice, tx. Climbed to 6500 ft VFR. WX was deteriorating to the south and west. Asked ZHU for WX at victoria. Reported 300 -- or partially obscured fog/rain. Asked for best WX in area. Sat was VFR. Proceeded to sat. Plane had odd vibration. Requested approach. Declared emergency. Advised all engine indications normal, however, vibration continued. After landing, inspection revealed left flap droop of 1/2 inch probably fluttering and causing the vibration. Every phase of flight was normal otherwise. I am making this report to cover my declared emergency. Flap was rerigged which seemed to correct the apparent vibration.
Original NASA ASRS Text
Title: PLT OF AN SMT TWIN ENG PVT ACFT DECLARED AN EMER AND DIVERTED TO A VFR ARPT BASED ON AN UNUSUAL ACFT VIBRATION WHICH WAS FOUND AFTER INSPECTION TO BE CAUSED BY THE WING FLAPS OUT OF 'RIG.'
Narrative: DEPARTED BRAZORIO VFR INTENDING TO PROCEED TO ALICE, TX. CLBED TO 6500 FT VFR. WX WAS DETERIORATING TO THE S AND W. ASKED ZHU FOR WX AT VICTORIA. RPTED 300 -- OR PARTIALLY OBSCURED FOG/RAIN. ASKED FOR BEST WX IN AREA. SAT WAS VFR. PROCEEDED TO SAT. PLANE HAD ODD VIBRATION. REQUESTED APCH. DECLARED EMER. ADVISED ALL ENG INDICATIONS NORMAL, HOWEVER, VIBRATION CONTINUED. AFTER LNDG, INSPECTION REVEALED L FLAP DROOP OF 1/2 INCH PROBABLY FLUTTERING AND CAUSING THE VIBRATION. EVERY PHASE OF FLT WAS NORMAL OTHERWISE. I AM MAKING THIS RPT TO COVER MY DECLARED EMER. FLAP WAS RERIGGED WHICH SEEMED TO CORRECT THE APPARENT VIBRATION.
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.