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Air carrier medium large transport had problem extending main landing gear. Eventually landed with gear extended but gear doors not stowed up.
| Attributes | |
| ACN | 116633 |
| Time | |
| Date | 198907 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : pit |
| State Reference | PA |
| Altitude | agl bound lower : 0 agl bound upper : 3000 |
| Environment | |
| Flight Conditions | Marginal |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : pit tower : pit |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent : approach landing other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 8500 flight time type : 3500 |
| ASRS Report | 116633 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : declared emergency flight crew : overcame equipment problem |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
On approach gear was extended. Indicators showed neither main gear had extended, nose gear was down and gear doors had not returned to an up-lock position. Recycled the gear twice. The left main gear now showed down and a fly by the tower confirmed this. Shortly thereafter the right main gear indicated down. All indicators showed the gear to be extended and locked with the gear doors not locked up. We elected to make another fly by the tower to confirm. We then returned and landed without incident. A later check indicated a malfunction of a gear door. All methods of determining the gear was down and locked were exercised. Equipment was standing by. An emergency was not declared as we were convinced the gear was locked down and the aircraft is designed to land with the gear doors extended (in the event of loss of hydraulic etc). Perhaps declaring an emergency would reduce the concern of possibly violating an far and ease the workload.
Original NASA ASRS Text
Title: ACR MLG HAD PROBLEM EXTENDING MAIN LNDG GEAR. EVENTUALLY LANDED WITH GEAR EXTENDED BUT GEAR DOORS NOT STOWED UP.
Narrative: ON APCH GEAR WAS EXTENDED. INDICATORS SHOWED NEITHER MAIN GEAR HAD EXTENDED, NOSE GEAR WAS DOWN AND GEAR DOORS HAD NOT RETURNED TO AN UP-LOCK POSITION. RECYCLED THE GEAR TWICE. THE LEFT MAIN GEAR NOW SHOWED DOWN AND A FLY BY THE TWR CONFIRMED THIS. SHORTLY THEREAFTER THE RIGHT MAIN GEAR INDICATED DOWN. ALL INDICATORS SHOWED THE GEAR TO BE EXTENDED AND LOCKED WITH THE GEAR DOORS NOT LOCKED UP. WE ELECTED TO MAKE ANOTHER FLY BY THE TWR TO CONFIRM. WE THEN RETURNED AND LANDED WITHOUT INCIDENT. A LATER CHECK INDICATED A MALFUNCTION OF A GEAR DOOR. ALL METHODS OF DETERMINING THE GEAR WAS DOWN AND LOCKED WERE EXERCISED. EQUIPMENT WAS STANDING BY. AN EMER WAS NOT DECLARED AS WE WERE CONVINCED THE GEAR WAS LOCKED DOWN AND THE ACFT IS DESIGNED TO LAND WITH THE GEAR DOORS EXTENDED (IN THE EVENT OF LOSS OF HYDRAULIC ETC). PERHAPS DECLARING AN EMER WOULD REDUCE THE CONCERN OF POSSIBLY VIOLATING AN FAR AND EASE THE WORKLOAD.
Data retrieved from NASA's ASRS site as of August 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.