 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
A line mechanic reports an engineering order issued by his air carrier to be accomplished during replacement of a first officer's forward windshield on a B777; also required pulling and collaring a circuit breaker that didn't exist in the P-200 right power panel. A lack of an effectivity list of circuit breakers depending on aircraft configuration also an issue.
| Attributes | |
| ACN | 881997 |
| Time | |
| Date | 201003 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Dusk |
| Aircraft 1 | |
| Make Model Name | B777 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Airframe Maintenance Powerplant |
| Events | |
| Anomaly | Deviation - Procedural Published Material / Policy |
Narrative:
I was assigned to replace the first officer's windshield on a B777-200 aircraft. Since this is a pre-engineering order (eo) windshield; the eo had to be accomplished. This eo is a 'pending airworthiness directive (ad).' the engineering order references the B777 maintenance manual for the windshield replacement. This reference has a circuit breaker location for the right-hand windshield that does not exist. Of the circuit breakers instructed to pull and collar on the P200 right power panel; row B; column 4 doesn't exist on aircraft. Since the circuit breaker has the same equipment number as the other circuit breaker on the P200 in the maintenance manual; I assume this breaker has varying locations depending on the aircraft's configuration. List effectivity of circuit breakers for the P200 in the maintenance manual; as well as the P100 for left-hand windshield replacement.
Original NASA ASRS Text
Title: A Line Mechanic reports an Engineering Order issued by his Air Carrier to be accomplished during replacement of a First Officer's forward windshield on a B777; also required pulling and collaring a circuit breaker that didn't exist in the P-200 right power panel. A lack of an effectivity list of circuit breakers depending on aircraft configuration also an issue.
Narrative: I was assigned to replace the First Officer's windshield on a B777-200 aircraft. Since this is a pre-Engineering Order (EO) windshield; the EO had to be accomplished. This EO is a 'pending Airworthiness Directive (AD).' The Engineering Order references the B777 Maintenance Manual for the windshield replacement. This reference has a circuit breaker location for the right-hand windshield that does not exist. Of the circuit breakers instructed to pull and collar on the P200 right power panel; row B; column 4 doesn't exist on aircraft. Since the circuit breaker has the same equipment number as the other circuit breaker on the P200 in the Maintenance Manual; I assume this breaker has varying locations depending on the aircraft's configuration. List effectivity of circuit breakers for the P200 in the Maintenance Manual; as well as the P100 for left-hand windshield replacement.
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.