CTHIn ForceLegislation
AD/B737/237 Amdt 1 - Passenger Cabin Conditioned Air Overhead Ducts
Boeing 737 Series AeroplanesBoeing 737 Series Aeroplanes
Start here
Get a plain-English read of Boeing 737 Series Aeroplanes
Turn the raw legal text into a practical explanation grounded in AD/B737/237 Amdt 1 - Passenger Cabin Conditioned Air Overhead Ducts.
Boeing 737 Series Aeroplanes
| AD/B737/237 Amdt 1 | Passenger Cabin ConditionedAir Overhead Ducts | 10/2007 |
|---|
| Applicability: | Model 737-300, -400, and -500 series aircraft, listed in Boeing Special Attention Service Bulletin 737-21-1131 Revision 3, or later FAA approved revision. |
|---|---|
| Requirement: | Action in accordance with the technical requirements of FAA AD 2005-03-02 Amdt 39-13958.The action (i.e. inspection or modification) defined in Boeing Special Attention Service Bulletin 737-21-1131 Revision 3 may be used as an alternative method of compliance to the requirements of paragraph (b) of FAA AD 2005-03-02. |
| Compliance: | As specified in the Requirement document, with a revised effective date of14 April 2005.The compliance time remains unchanged by this issue of the Directive. |
| This Amendment becomes effective on 27 September 2007. | |
| Background: | The manufacturer received a substantial number of reports of leaking air conditioning overhead ducts on Model 737 and Model 757 aircraft from multiple airlines. Two of these reports described overhead duct failures that caused the ceiling panels to fall into the passenger cabin. This Directive requires overhead duct lanyard installations, to prevent a disconnected overhead duct from causing ceiling panels to drop below the minimum height of the evacuation zone for the passenger cabin, which could result in inadequate height for safe exit in the event of an emergency evacuation.Amendment 1 is issued to allow use of the latest Boeing service bulletin as an alternative method of compliance to the requirements of paragraph (b) of FAA AD 2005-03-02. |
Image unavailable in extracted text
David Villiers
Delegate of the Civil Aviation Safety Authority
14 August 2007