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Maintenance technician reported their air carrier's B737 fleet are having flight deck doors modified with new all electric locking systems. Reporter stated the flight deck doors cannot be secured when the locking systems have no power.
| Attributes | |
| ACN | 1369027 |
| Time | |
| Date | 201607 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Cockpit Door |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Airframe Maintenance Powerplant |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Security |
Narrative:
Noticed today that the 737 fleet (and maybe others) are having the flight deck doors modified and the flight deck door mechanical lock either covered over or removed; leaving only the electronic means for securing the flight deck door. The problem is when the aircraft is on ground service bus; the electronic flight deck door lock system is not powered and the flight deck door cannot be secured. In addition; when the aircraft is powered down; the flight deck door can no longer be secured mechanically either. Seems an unnecessary security risk; after years of improving security.
Original NASA ASRS Text
Title: Maintenance Technician reported their air carrier's B737 fleet are having flight deck doors modified with new all electric locking systems. Reporter stated the flight deck doors cannot be secured when the locking systems have no power.
Narrative: Noticed today that the 737 fleet (and maybe others) are having the flight deck doors modified and the flight deck door mechanical lock either covered over or removed; leaving only the electronic means for securing the flight deck door. The problem is when the aircraft is on Ground Service Bus; the electronic flight deck door lock system is not powered and the flight deck door cannot be secured. In addition; when the aircraft is powered down; the flight deck door can no longer be secured mechanically either. Seems an unnecessary security risk; after years of improving security.
Data retrieved from NASA's ASRS site 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.