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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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During climb out the flight crew is unable to pressurize the aircraft. Also they note that the main deck cargo door open light had illuminated. Upon inspection, 9 out of 10 door latches were not latched.
| Attributes | |
| ACN | 323561 |
| Time | |
| Date | 199512 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : lax |
| State Reference | CA |
| Altitude | msl bound lower : 4000 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : lax |
| Operator | common carrier : air carrier |
| Make Model Name | B747 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : atp pilot : commercial |
| Experience | flight time last 90 days : 140 flight time total : 18000 flight time type : 200 |
| ASRS Report | 323561 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : overcame equipment problem other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
On climb out from lax, the flight engineer informed me that he was unable to control the pressurization. We also noticed that the main deck cargo annunciator light on the flight engineer's panel was illuminated, indicating a probable malfunction of the door. We discontinued our climb and maintained a 2 psi differential on the aircraft. Our company was notified of my decision to return to our point of our origination (lax) and they agreed to same. An overweight landing was made and normal shutdown procedures were adhered to. Our jumpseat rider informed me that '1' of the 10 locks on the door was latched, all others in the unlatched position. Light indications on takeoff were all normal. Recommendations: have a member of the flight crew check visually that 'all locks' are secure prior to taxi. The company agrees wholeheartedly.
Original NASA ASRS Text
Title: DURING CLBOUT THE FLC IS UNABLE TO PRESSURIZE THE ACFT. ALSO THEY NOTE THAT THE MAIN DECK CARGO DOOR OPEN LIGHT HAD ILLUMINATED. UPON INSPECTION, 9 OUT OF 10 DOOR LATCHES WERE NOT LATCHED.
Narrative: ON CLBOUT FROM LAX, THE FE INFORMED ME THAT HE WAS UNABLE TO CTL THE PRESSURIZATION. WE ALSO NOTICED THAT THE MAIN DECK CARGO ANNUNCIATOR LIGHT ON THE FE'S PANEL WAS ILLUMINATED, INDICATING A PROBABLE MALFUNCTION OF THE DOOR. WE DISCONTINUED OUR CLB AND MAINTAINED A 2 PSI DIFFERENTIAL ON THE ACFT. OUR COMPANY WAS NOTIFIED OF MY DECISION TO RETURN TO OUR POINT OF OUR ORIGINATION (LAX) AND THEY AGREED TO SAME. AN OVERWT LNDG WAS MADE AND NORMAL SHUTDOWN PROCS WERE ADHERED TO. OUR JUMPSEAT RIDER INFORMED ME THAT '1' OF THE 10 LOCKS ON THE DOOR WAS LATCHED, ALL OTHERS IN THE UNLATCHED POS. LIGHT INDICATIONS ON TKOF WERE ALL NORMAL. RECOMMENDATIONS: HAVE A MEMBER OF THE FLC CHK VISUALLY THAT 'ALL LOCKS' ARE SECURE PRIOR TO TAXI. THE COMPANY AGREES WHOLEHEARTEDLY.
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.