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Flight crew of a B727 forgot to write landing gear discrepancy in the aircraft logbook. Problem was caused by the lack of indication of a safe left main gear down and locked, discovered during final approach.
| Attributes | |
| ACN | 410877 |
| Time | |
| Date | 199808 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : sjc |
| State Reference | CA |
| Altitude | msl bound lower : 1750 msl bound upper : 2000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : sjc |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach landing other |
| Route In Use | approach : straight in |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : flight engineer pilot : cfi |
| Experience | flight time last 90 days : 50 flight time total : 6000 flight time type : 700 |
| ASRS Report | 410877 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : second officer |
| Qualification | pilot : instrument pilot : flight engineer pilot : commercial |
| Experience | flight time last 90 days : 0 flight time total : 1200 |
| ASRS Report | 411042 |
| Events | |
| Anomaly | aircraft equipment problem : less severe non adherence : far non adherence : published procedure other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | none taken : anomaly accepted other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation other |
Narrative:
On final approach, we lowered the landing gear and the 'gear unsafe' warning horn sounded and the left main gear (green) light did not illuminate, indicating that the left gear was not down and locked. On short final we asked the tower to visually confirm that the gear was down. They did. To us this indicated that it was simply a microswitch failure. We went ahead and landed. No event. What we failed to do was enter the discrepancy in the aircraft maintenance logbook.
Original NASA ASRS Text
Title: FLC OF A B727 FORGOT TO WRITE LNDG GEAR DISCREPANCY IN THE ACFT LOGBOOK. PROB WAS CAUSED BY THE LACK OF INDICATION OF A SAFE L MAIN GEAR DOWN AND LOCKED, DISCOVERED DURING FINAL APCH.
Narrative: ON FINAL APCH, WE LOWERED THE LNDG GEAR AND THE 'GEAR UNSAFE' WARNING HORN SOUNDED AND THE L MAIN GEAR (GREEN) LIGHT DID NOT ILLUMINATE, INDICATING THAT THE L GEAR WAS NOT DOWN AND LOCKED. ON SHORT FINAL WE ASKED THE TWR TO VISUALLY CONFIRM THAT THE GEAR WAS DOWN. THEY DID. TO US THIS INDICATED THAT IT WAS SIMPLY A MICROSWITCH FAILURE. WE WENT AHEAD AND LANDED. NO EVENT. WHAT WE FAILED TO DO WAS ENTER THE DISCREPANCY IN THE ACFT MAINT LOGBOOK.
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.