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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Air carrier had completed preflight, no discrepancies. On initial climb, unable to pressurize aircraft. No door warning lights. Return and land. Found east&east door open and faulty warning light switch. Repaired and continued flight.
| Attributes | |
| ACN | 347774 |
| Time | |
| Date | 199609 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : phx |
| State Reference | AZ |
| Altitude | msl bound lower : 6000 msl bound upper : 7000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : phx |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : takeoff climbout : initial |
| Route In Use | departure sid : sid |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | controller non radar : 10 controller radar : 10 flight time last 90 days : 250 flight time total : 5500 flight time type : 900 |
| ASRS Report | 347774 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 210 flight time total : 11000 flight time type : 9000 |
| ASRS Report | 348880 |
| Events | |
| Anomaly | aircraft equipment problem : less severe aircraft equipment problem : critical non adherence : far non adherence : published procedure |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : unable other |
| Consequence | Other Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
Upon arriving at the aircraft for our flight, a preflight was conducted. Both the exterior and cockpit were normal with no irregularities noted. Operation of the aircraft up to takeoff had been normal. Takeoff was normal. Aircraft had become airborne but would not pressurize. With the aircraft not pressurizing we returned to land. We performed a normal landing with no incident. Once returned to the gate, maintenance was called and informed us the electrical and electronic (east&east) compartment door had opened during flight. When both exterior and cockpit preflts were conducted there was no abnormal indications the east&east door was open and there was no caution annunciator light indicating the door was open as well. During flight the east&east door light was not illuminated indicating the door was secure. The mechanics in phoenix informed us the door opened during flight and the annunciator light switch was stuck in the closed position giving a false indication. Both door and switch were resecured and we were able to resume our flight without any other incident.
Original NASA ASRS Text
Title: ACR HAD COMPLETED PREFLT, NO DISCREPANCIES. ON INITIAL CLB, UNABLE TO PRESSURIZE ACFT. NO DOOR WARNING LIGHTS. RETURN AND LAND. FOUND E&E DOOR OPEN AND FAULTY WARNING LIGHT SWITCH. REPAIRED AND CONTINUED FLT.
Narrative: UPON ARRIVING AT THE ACFT FOR OUR FLT, A PREFLT WAS CONDUCTED. BOTH THE EXTERIOR AND COCKPIT WERE NORMAL WITH NO IRREGULARITIES NOTED. OP OF THE ACFT UP TO TKOF HAD BEEN NORMAL. TKOF WAS NORMAL. ACFT HAD BECOME AIRBORNE BUT WOULD NOT PRESSURIZE. WITH THE ACFT NOT PRESSURIZING WE RETURNED TO LAND. WE PERFORMED A NORMAL LNDG WITH NO INCIDENT. ONCE RETURNED TO THE GATE, MAINT WAS CALLED AND INFORMED US THE ELECTRICAL AND ELECTRONIC (E&E) COMPARTMENT DOOR HAD OPENED DURING FLT. WHEN BOTH EXTERIOR AND COCKPIT PREFLTS WERE CONDUCTED THERE WAS NO ABNORMAL INDICATIONS THE E&E DOOR WAS OPEN AND THERE WAS NO CAUTION ANNUNCIATOR LIGHT INDICATING THE DOOR WAS OPEN AS WELL. DURING FLT THE E&E DOOR LIGHT WAS NOT ILLUMINATED INDICATING THE DOOR WAS SECURE. THE MECHS IN PHOENIX INFORMED US THE DOOR OPENED DURING FLT AND THE ANNUNCIATOR LIGHT SWITCH WAS STUCK IN THE CLOSED POS GIVING A FALSE INDICATION. BOTH DOOR AND SWITCH WERE RESECURED AND WE WERE ABLE TO RESUME OUR FLT WITHOUT ANY OTHER INCIDENT.
Data retrieved from NASA's ASRS site as of July 2007 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.