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A B737-200 was released from maintenance with the right main landing gear alternate position indicating sensor not installed. No flight handbook test for this system.
| Attributes | |
| ACN | 702287 |
| Time | |
| Date | 200606 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : cyxx.airport |
| State Reference | FO |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked ground : preflight |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Experience | flight time last 90 days : 100 flight time type : 1600 |
| ASRS Report | 702287 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : published procedure non adherence : far non adherence : far |
| Independent Detector | aircraft equipment other aircraft equipment : no test alternate pos indication other flight crewa other flight crewb |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : manuals contributing factor : schedule pressure contributing factor : work cards performance deficiency : testing performance deficiency : scheduled maintenance performance deficiency : non compliance with legal requirements performance deficiency : logbook entry performance deficiency : installation performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Chart Or Publication Flight Crew Human Performance Maintenance Human Performance Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
The aircraft came out of maintenance without the right alternate main gear safe sensor connected. The preflight procedures directed by the flight handbook do not direct the crew to perform the preflight in a manner that would detect such a situation. The preflight procedures in the flight handbook need to be changed to address this situation by directing the crew to look for 5 green down and locked lights instead of just the 3 illustrated in the flight handbook. In the meantime I am adding this to my flow to prevent such an occurrence.
Original NASA ASRS Text
Title: A B737-200 WAS RELEASED FROM MAINT WITH THE R MAIN LNDG GEAR ALTERNATE POS INDICATING SENSOR NOT INSTALLED. NO FLT HANDBOOK TEST FOR THIS SYS.
Narrative: THE ACFT CAME OUT OF MAINT WITHOUT THE R ALTERNATE MAIN GEAR SAFE SENSOR CONNECTED. THE PREFLT PROCS DIRECTED BY THE FLT HANDBOOK DO NOT DIRECT THE CREW TO PERFORM THE PREFLT IN A MANNER THAT WOULD DETECT SUCH A SITUATION. THE PREFLT PROCS IN THE FLT HANDBOOK NEED TO BE CHANGED TO ADDRESS THIS SITUATION BY DIRECTING THE CREW TO LOOK FOR 5 GREEN DOWN AND LOCKED LIGHTS INSTEAD OF JUST THE 3 ILLUSTRATED IN THE FLT HANDBOOK. IN THE MEANTIME I AM ADDING THIS TO MY FLOW TO PREVENT SUCH AN OCCURRENCE.
Data retrieved from NASA's ASRS site as of January 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.