 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
A B737-400 on 2 separate occasions on initial cabin pressurization the forward cabin door handle rotated up from the closed and locked position.
| Attributes | |
| ACN | 415816 |
| Time | |
| Date | 199810 |
| Day | Thu |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : zzz |
| State Reference | US |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | other |
| Flight Plan | None |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Qualification | other other : other |
| ASRS Report | 415816 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Qualification | other other : other |
| ASRS Report | 415934 |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : far non adherence : published procedure other anomaly other |
| Independent Detector | other other : unspecified |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
On wednesday I was issued job card xax-abc along with write-up stating that the main entrance door handle torque test had failed the 600 pound in torque limit, which is item #2 on job card #xax-abc. While operating door, I found that the top aft latch roller was not engaging its latch properly and made door hard to close. I believe the top aft roller being out of adjustment caused the problem of main entrance door handle torque test failure. I adjusted the roller to fit properly into its latch by adjusting the programming arm. Found door to be within torque handle limits so I signed off the write-up. On thursday I was informed that the main entrance door handle on aircraft bzb had unlatched during pressurization while taking off from XXX and again at depressurization coming into YYY. Both times the stewardess closed the door handle. Earlier in the day aircraft bzb had flown from ZZZ to XXX without incident.
Original NASA ASRS Text
Title: A B737-400 ON 2 SEPARATE OCCASIONS ON INITIAL CABIN PRESSURIZATION THE FORWARD CABIN DOOR HANDLE ROTATED UP FROM THE CLOSED AND LOCKED POS.
Narrative: ON WEDNESDAY I WAS ISSUED JOB CARD XAX-ABC ALONG WITH WRITE-UP STATING THAT THE MAIN ENTRANCE DOOR HANDLE TORQUE TEST HAD FAILED THE 600 LB IN TORQUE LIMIT, WHICH IS ITEM #2 ON JOB CARD #XAX-ABC. WHILE OPERATING DOOR, I FOUND THAT THE TOP AFT LATCH ROLLER WAS NOT ENGAGING ITS LATCH PROPERLY AND MADE DOOR HARD TO CLOSE. I BELIEVE THE TOP AFT ROLLER BEING OUT OF ADJUSTMENT CAUSED THE PROB OF MAIN ENTRANCE DOOR HANDLE TORQUE TEST FAILURE. I ADJUSTED THE ROLLER TO FIT PROPERLY INTO ITS LATCH BY ADJUSTING THE PROGRAMMING ARM. FOUND DOOR TO BE WITHIN TORQUE HANDLE LIMITS SO I SIGNED OFF THE WRITE-UP. ON THURSDAY I WAS INFORMED THAT THE MAIN ENTRANCE DOOR HANDLE ON ACFT BZB HAD UNLATCHED DURING PRESSURIZATION WHILE TAKING OFF FROM XXX AND AGAIN AT DEPRESSURIZATION COMING INTO YYY. BOTH TIMES THE STEWARDESS CLOSED THE DOOR HANDLE. EARLIER IN THE DAY ACFT BZB HAD FLOWN FROM ZZZ TO XXX WITHOUT 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.