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A falcon 50 (DA50) first officer reports a center engine s-duct inlet door opened in-flight causing airflow disruption and a power loss. An emergency was declared.
| Attributes | |
| ACN | 805776 |
| Time | |
| Date | 200809 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl single value : 19000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : zzz.tracon tower : lax.tower |
| Operator | general aviation : personal |
| Make Model Name | Falcon 50 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 100 flight time total : 12000 flight time type : 1100 |
| ASRS Report | 805776 |
| Events | |
| Anomaly | aircraft equipment problem : less severe |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : diverted to another airport flight crew : landed in emergency condition flight crew : declared emergency |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
Experienced an in-flight engine out light illumination; and thump. Power was not responsive to pilot inputs. Engine was shut down and approach control was notified. ATC declared an emergency for us and we proceeded to the ZZZ airport; because of its long runway and emergency equipment. Landed without incident. Engine inlet door was found open which caused the abnormality. Callback conversation with reporter revealed the following information: the reporter stated a center engine s-duct inspection door is provided for maintenance to perform certain inspections. The crew checked the latches closed as required on preflight but what failed was the inspection door hinge. When the door opened engine inlet airflow was disrupted. Because the emergency checklist said if the engine is not responsive to shut it down. In fact the engine did not respond because of the airflow disruption and so it was secured. Crew diverted to a nearby airport where repairs to the inlet door were made.
Original NASA ASRS Text
Title: A FALCON 50 (DA50) FO REPORTS A CTR ENG S-DUCT INLET DOOR OPENED INFLT CAUSING AIRFLOW DISRUPTION AND A PWR LOSS. AN EMER WAS DECLARED.
Narrative: EXPERIENCED AN INFLT ENG OUT LIGHT ILLUMINATION; AND THUMP. PWR WAS NOT RESPONSIVE TO PLT INPUTS. ENG WAS SHUT DOWN AND APCH CTL WAS NOTIFIED. ATC DECLARED AN EMER FOR US AND WE PROCEEDED TO THE ZZZ ARPT; BECAUSE OF ITS LONG RWY AND EMER EQUIP. LANDED WITHOUT INCIDENT. ENG INLET DOOR WAS FOUND OPEN WHICH CAUSED THE ABNORMALITY. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE REPORTER STATED A CENTER ENG S-DUCT INSPECTION DOOR IS PROVIDED FOR MAINTENANCE TO PERFORM CERTAIN INSPECTIONS. THE CREW CHECKED THE LATCHES CLOSED AS REQUIRED ON PREFLT BUT WHAT FAILED WAS THE INSPECTION DOOR HINGE. WHEN THE DOOR OPENED ENG INLET AIRFLOW WAS DISRUPTED. BECAUSE THE EMERGENCY CHECKLIST SAID IF THE ENG IS NOT RESPONSIVE TO SHUT IT DOWN. IN FACT THE ENG DID NOT RESPOND BECAUSE OF THE AIRFLOW DISRUPTION AND SO IT WAS SECURED. CREW DIVERTED TO A NEARBY ARPT WHERE REPAIRS TO THE INLET DOOR WERE MADE.
Data retrieved from NASA's ASRS site as of May 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.