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B737-400 flight crew experiences several issues including lack of pressurization; after picking up the aircraft after heavy maintenance for a ferry flight. Flight returns to departure airport.
| Attributes | |
| ACN | 999285 |
| Time | |
| Date | 201203 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Dawn |
| Aircraft 1 | |
| Make Model Name | B737-400 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Autopilot |
| Person 1 | |
| Function | Pilot Flying First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy |
Narrative:
Aircraft had just come out of 'a' check maintenance. We took off and began to climb to our assigned altitude of 17;000 ft. At about 9;600 ft we got an altitude horn and I disengaged the autopilot and asked to level off at 10;000 to trouble shoot the issue. At level off I tried to reengage both the 'B' and 'a' autopilot; but could not reengage. We ran through QRH for pressurization and decided to return due to multiple issues (autopilot and pressurization; number 2 radio not working; captain terrain not working) since it just came out of 'a' check. Upon start-up we had a hung start on the number 1 engine and determined we had a bad right igniter on the number 1 engine. Maintenance had to also change the right igniter before we could take-off again. The avionics tech found a blown circuit breaker on the AFDS that caused the autopilot not to engage in flight (previously worked on climb). We noticed several issues all day with aircraft.the pressurization issue described above was caused by the bleeds being turned off by maintenance personnel. Upon reading the QRH for the pressurization; the bleeds are not checked during the checklist. Other issues with the aircraft should have been repaired during the 'a' check.
Original NASA ASRS Text
Title: B737-400 flight crew experiences several issues including lack of pressurization; after picking up the aircraft after heavy maintenance for a ferry flight. Flight returns to departure airport.
Narrative: Aircraft had just come out of 'A' Check maintenance. We took off and began to climb to our assigned altitude of 17;000 FT. At about 9;600 FT we got an altitude horn and I disengaged the autopilot and asked to level off at 10;000 to trouble shoot the issue. At level off I tried to reengage both the 'B' and 'A' autopilot; but could not reengage. We ran through QRH for pressurization and decided to return due to multiple issues (autopilot and pressurization; number 2 radio not working; Captain terrain not working) since it just came out of 'A' check. Upon start-up we had a hung start on the number 1 engine and determined we had a bad right igniter on the number 1 engine. Maintenance had to also change the right igniter before we could take-off again. The avionics tech found a blown circuit breaker on the AFDS that caused the autopilot not to engage in flight (previously worked on climb). We noticed several issues all day with aircraft.The pressurization issue described above was caused by the bleeds being turned off by Maintenance personnel. Upon reading the QRH for the pressurization; the bleeds are not checked during the checklist. Other issues with the aircraft should have been repaired during the 'A' Check.
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.