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A line captain reports about recurring engine 'reverser' lights illuminating at the P5 aft overhead panel on numerous B737-800 aircraft when the throttles are advanced. Repeated cycling of the cfm-56 engine thrust reversers to clear the engine accessory unit (eau) 'stow' faults and logbook write-ups; have not corrected the intermittent problems.
| Attributes | |
| ACN | 933439 |
| Time | |
| Date | 201102 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Fan Reverser |
| Person 1 | |
| Function | Captain |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Inflight Event / Encounter Other / Unknown |
Narrative:
This sequence [is] on aircraft X; a B737-800. Had another thrust reverser light illuminated with the advancement of the throttles. I have had extensive personal history with several aircraft; same problem. As usual; maintenance cleared the usual three eau (engine accessory unit) errors and cycled the thrust reversers to confirm operation. I advanced the throttles again; and [reverser] light illuminated again. I refused aircraft due to the requirement of both thrust reversers to be operational for [overwater] flights to ZZZZ. This aircraft; as usual; was then signed-off by clearing the eau errors and operating the thrust reversers.I assure all who read this report; that if aircraft X is located somewhere in this air carrier system; this same thrust reverser issue will be shown to still be demonstrated.
Original NASA ASRS Text
Title: A Line Captain reports about recurring engine 'Reverser' lights illuminating at the P5 Aft Overhead panel on numerous B737-800 aircraft when the throttles are advanced. Repeated cycling of the CFM-56 engine Thrust Reversers to clear the Engine Accessory Unit (EAU) 'STOW' faults and Logbook write-ups; have not corrected the intermittent problems.
Narrative: This sequence [is] on Aircraft X; a B737-800. Had another thrust reverser light illuminated with the advancement of the throttles. I have had extensive personal history with several aircraft; same problem. As usual; Maintenance cleared the usual three EAU (Engine Accessory Unit) errors and cycled the thrust reversers to confirm operation. I advanced the throttles again; and [reverser] light illuminated again. I refused aircraft due to the requirement of both thrust reversers to be operational for [overwater] flights to ZZZZ. This aircraft; as usual; was then signed-off by clearing the EAU errors and operating the thrust reversers.I assure all who read this report; that if Aircraft X is located somewhere in this air carrier system; this same Thrust Reverser issue will be shown to still be demonstrated.
Data retrieved from NASA's ASRS site as of April 2012 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.