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B737-500 crew reports inability to engage autoplt after takeoff. Also no autothrottle and no pressurization.
| Attributes | |
| ACN | 728863 |
| Time | |
| Date | 200702 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : ind.airport |
| State Reference | IN |
| Altitude | msl single value : 1500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : ind.tracon tracon : zzz.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B737-500 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | climbout : initial |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Experience | flight time last 90 days : 150 flight time total : 14000 flight time type : 3000 |
| ASRS Report | 728863 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Experience | flight time total : 9800 flight time type : 500 |
| ASRS Report | 728860 |
| Events | |
| Anomaly | aircraft equipment problem : less severe |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | none taken : anomaly accepted |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft Flight Crew Human Performance |
| Primary Problem | Aircraft |
Narrative:
Aircraft came out of maintenance for a door sheet metal repair. Did an intense preflight on interior and exterior of aircraft. Everything good. Taxi out and takeoff were normal. Passing through 1500 ft called flaps up VNAV. VNAV would not engage. Recycled autothrottle switch. No help. First officer did after takeoff checklist and noticed we were not pressurizing. Suspected squat switch problem. Turned aircraft over to first officer. Called dispatch and maintenance. Since we were close to okk all decided to continue to ord for maintenance. All worked out well. First officer did a great job handling aircraft and ATC as I was on the radio with company. Callback conversation with reporter revealed the following information: the reporter did not receive any feedback from the company so the actual cause of this incident remains unknown. He believes his original diagnosis is most likely correct.
Original NASA ASRS Text
Title: B737-500 CREW RPTS INABILITY TO ENGAGE AUTOPLT AFTER TKOF. ALSO NO AUTOTHROTTLE AND NO PRESSURIZATION.
Narrative: ACFT CAME OUT OF MAINT FOR A DOOR SHEET METAL REPAIR. DID AN INTENSE PREFLT ON INTERIOR AND EXTERIOR OF ACFT. EVERYTHING GOOD. TAXI OUT AND TKOF WERE NORMAL. PASSING THROUGH 1500 FT CALLED FLAPS UP VNAV. VNAV WOULD NOT ENGAGE. RECYCLED AUTOTHROTTLE SWITCH. NO HELP. FO DID AFTER TKOF CHKLIST AND NOTICED WE WERE NOT PRESSURIZING. SUSPECTED SQUAT SWITCH PROB. TURNED ACFT OVER TO FO. CALLED DISPATCH AND MAINT. SINCE WE WERE CLOSE TO OKK ALL DECIDED TO CONTINUE TO ORD FOR MAINT. ALL WORKED OUT WELL. FO DID A GREAT JOB HANDLING ACFT AND ATC AS I WAS ON THE RADIO WITH COMPANY. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR DID NOT RECEIVE ANY FEEDBACK FROM THE COMPANY SO THE ACTUAL CAUSE OF THIS INCIDENT REMAINS UNKNOWN. HE BELIEVES HIS ORIGINAL DIAGNOSIS IS MOST LIKELY CORRECT.
Data retrieved from NASA's ASRS site as of January 2009 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.