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Maintenance technician reported that aircraft maintenance manuals did not have a step to open fan cowls while working on thrust reversers.
| Attributes | |
| ACN | 1688278 |
| Time | |
| Date | 201909 |
| Aircraft 1 | |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Fan Reverser |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Airframe Maintenance Powerplant |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Maintenance Deviation - Procedural Published Material / Policy |
Narrative:
I worked an inbound reverser log item on aircraft XXXX log page xxxxxxx. I pulled [aircraft maintenance manual] 78-xx-xx-XXX-XXX-XXX and [aircraft maintenance manual] 78-xx-xy-xxy-XXX-XXX. Went out to aircraft and performed engine accessory unit reset and then went to flight deck and cycled engine 1 reverser 4 cycles. Determined reverser was good and had no faults; signed off item. My maintenance manuals never had me go out to engine 1 to open fan cowls so fan cowls were never opened.
Original NASA ASRS Text
Title: Maintenance Technician reported that aircraft maintenance manuals did not have a step to open fan cowls while working on thrust reversers.
Narrative: I worked an inbound reverser log item on aircraft XXXX log page XXXXXXX. I pulled [aircraft maintenance manual] 78-XX-XX-XXX-XXX-XXX and [aircraft maintenance manual] 78-XX-XY-XXY-XXX-XXX. Went out to aircraft and performed Engine Accessory Unit reset and then went to flight deck and cycled engine 1 reverser 4 cycles. Determined reverser was good and had no faults; signed off item. My maintenance manuals never had me go out to engine 1 to open fan cowls so fan cowls were never opened.
Data retrieved from NASA's ASRS site 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.