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B727-200 had the landing gear accessory unit replaced, but no maintenance manual procedure published for test of all system involved with the unit.
| Attributes | |
| ACN | 488438 |
| Time | |
| Date | 200010 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B727-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| Experience | maintenance technician : 12 |
| ASRS Report | 488438 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : lead technician |
| Qualification | technician : airframe technician : powerplant |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation non adherence : far |
| Independent Detector | aircraft equipment other aircraft equipment : anti-icg warning other other : person 1 |
| Resolutory Action | none taken : unable |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : engineering procedure contributing factor : manuals performance deficiency : training performance deficiency : testing |
| Supplementary | |
| Problem Areas | Chart Or Publication Aircraft Maintenance Human Performance |
| Primary Problem | Chart Or Publication |
| Situations | |
| Publication | MAINT. MANUL PROCEDURES |
Narrative:
After replacing the landing gear accessory unit, I could not find a removal/installation/operations check procedure in the maintenance manual. I examined the aircraft schematic manual and operations checked the related system, ie, landing gear warning and position, etc. I've witnessed lead mechanics change this component in the past and performed the same chkout. The unit fixed the anti-ice problem I was working on. I'm not sure what the exact chkout procedures for the unit entail. I've checked the unit out to the best of my knowledge.
Original NASA ASRS Text
Title: B727-200 HAD THE LNDG GEAR ACCESSORY UNIT REPLACED, BUT NO MAINT MANUAL PROC PUBLISHED FOR TEST OF ALL SYS INVOLVED WITH THE UNIT.
Narrative: AFTER REPLACING THE LNDG GEAR ACCESSORY UNIT, I COULD NOT FIND A REMOVAL/INSTALLATION/OPS CHK PROC IN THE MAINT MANUAL. I EXAMINED THE ACFT SCHEMATIC MANUAL AND OPS CHKED THE RELATED SYS, IE, LNDG GEAR WARNING AND POS, ETC. I'VE WITNESSED LEAD MECHS CHANGE THIS COMPONENT IN THE PAST AND PERFORMED THE SAME CHKOUT. THE UNIT FIXED THE ANTI-ICE PROB I WAS WORKING ON. I'M NOT SURE WHAT THE EXACT CHKOUT PROCS FOR THE UNIT ENTAIL. I'VE CHKED THE UNIT OUT TO THE BEST OF MY KNOWLEDGE.
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.