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A EMB120 was found on the preflight check to have a left nacelle flap displaced and misaligned in the retract position. Mechanic operated flaps and visually checked the left nacelle flap and signed off as ok for service.
| Attributes | |
| ACN | 357254 |
| Time | |
| Date | 199612 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz |
| State Reference | US |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Brasilia EMB-120 All Series |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : preflight other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 160 flight time total : 14000 flight time type : 6000 |
| ASRS Report | 357254 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Qualification | other other : other |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | other other : unspecified |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
Preflight inspection revealed a left nacelle flap displaced and misaligned in the retracted condition. I pointed out that the main attaching points at the bottom of the flap, which have bearings, were crooked, misaligned and not like the other wing's nacelle assembly. The mechanic lowered the flaps, inspected, and stated there was nothing wrong and that the flap wouldn't come off. Mechanic then signed aircraft log to the affect no defects noted ok for service. Callback conversation with reporter revealed the following information: when flying this airplane throughout the day reporter did require more than normal aileron trim because of the flap displacement. There was no asymmetry problems when using the flaps. The nacelle flaps appear to be the pair that have the greater wear on the hinges and bearings. The reporter has no information on the corrective action maintenance may have taken on this flap.
Original NASA ASRS Text
Title: A EMB120 WAS FOUND ON THE PREFLT CHK TO HAVE A L NACELLE FLAP DISPLACED AND MISALIGNED IN THE RETRACT POS. MECH OPERATED FLAPS AND VISUALLY CHKED THE L NACELLE FLAP AND SIGNED OFF AS OK FOR SVC.
Narrative: PREFLT INSPECTION REVEALED A L NACELLE FLAP DISPLACED AND MISALIGNED IN THE RETRACTED CONDITION. I POINTED OUT THAT THE MAIN ATTACHING POINTS AT THE BOTTOM OF THE FLAP, WHICH HAVE BEARINGS, WERE CROOKED, MISALIGNED AND NOT LIKE THE OTHER WING'S NACELLE ASSEMBLY. THE MECH LOWERED THE FLAPS, INSPECTED, AND STATED THERE WAS NOTHING WRONG AND THAT THE FLAP WOULDN'T COME OFF. MECH THEN SIGNED ACFT LOG TO THE AFFECT NO DEFECTS NOTED OK FOR SVC. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: WHEN FLYING THIS AIRPLANE THROUGHOUT THE DAY RPTR DID REQUIRE MORE THAN NORMAL AILERON TRIM BECAUSE OF THE FLAP DISPLACEMENT. THERE WAS NO ASYMMETRY PROBS WHEN USING THE FLAPS. THE NACELLE FLAPS APPEAR TO BE THE PAIR THAT HAVE THE GREATER WEAR ON THE HINGES AND BEARINGS. THE RPTR HAS NO INFO ON THE CORRECTIVE ACTION MAINT MAY HAVE TAKEN ON THIS FLAP.
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.