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Following the discovery of 'blue ice' in the aft lavatory service panel; the aircraft was relocated to the hangar for a dump valve replacement. It was reported that a supervisor cleared the leak check as okay; and the aircraft was sent back to the gate for a scheduled flight. Prior to departure; it was determined that the valve was still leaking; so the aircraft was again sent to the hangar and the valve was replaced.
| Attributes | |
| ACN | 1032566 |
| Time | |
| Date | 201208 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Waste Water Disposal System |
| Person 1 | |
| Function | Technician |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy |
Narrative:
[The aft lavatory dump] valve was found damaged. A large chunk of ice was found around the service panel. [I] determined the valve was damaged and needed replacement. The hangar was informed to replace the valve. A supervisor signed off the leak check as ok. The aircraft was sent to the gate leaking causing an unsafe condition and a delay. The aircraft was sent back to the hangar where the valve was replaced. This substandard maintenance needs to be stopped; pressure from management to produce aircraft. Schedule outweighs safety in the eyes of some management employees. Suggest not allowing management to disregard procedures and leave assignment of all out of service aircraft to the crew chief and maintenance technicians.
Original NASA ASRS Text
Title: Following the discovery of 'Blue Ice' in the aft lavatory service panel; the aircraft was relocated to the hangar for a dump valve replacement. It was reported that a supervisor cleared the leak check as okay; and the aircraft was sent back to the gate for a scheduled flight. Prior to departure; it was determined that the valve was still leaking; so the aircraft was again sent to the hangar and the valve was replaced.
Narrative: [The aft lavatory dump] valve was found damaged. A large chunk of ice was found around the service panel. [I] determined the valve was damaged and needed replacement. The hangar was informed to replace the valve. A Supervisor signed off the leak check as ok. The aircraft was sent to the gate leaking causing an unsafe condition and a delay. The aircraft was sent back to the hangar where the valve was replaced. This substandard maintenance needs to be stopped; pressure from management to produce aircraft. Schedule outweighs safety in the eyes of some management employees. Suggest not allowing management to disregard procedures and leave assignment of all out of service aircraft to the crew chief and maintenance technicians.
Data retrieved from NASA's ASRS site as of July 2013 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.