Airworthiness Directive · Amendment 39-15748 · Boeing Model 737-600, -700, -700C, -800 and -900 Series Airplanes
Boeing Model 737-600, -700, -700C, -800 and -900 Series Airplanes
This AD applies to Boeing Model 737-600, -700, -700C, -800 and -900 series airplanes, certificated in any category, as identified in Boeing Service Bulletin 737-25-1491, dated April 23, 2007.
We are adopting a new airworthiness directive (AD) for certain Boeing Model 737-600, -700, -700C, -800 and -900 series airplanes. This AD requires an inspection of the escape slides for the forward and aft entry and service doors to determine the part number and service bulletin number stenciled on the escape slide girt, and modification of the escape slide assemblies. This AD also requires concurrent modification of the escape slide latch assemblies; concurrent inspection of the escape slides to determine the part number and service bulletin number stenciled on the escape slide girts, and replacement of the trigger housing on the regulator valve with an improved trigger housing if necessary; and concurrent replacement of the rod in the pilot valve regulator with a new, improved rod; as applicable. This AD results from reports that certain escape slides did not automatically inflate when deployed or after the manual inflation cable was pulled. We are issuing this AD to prevent failure of an escape slide to inflate when deployed, which could result in the slide being unusable during an emergency evacuation and consequent injury to passengers or crewmembers.
Comply with this AD within the compliance times specified, unless already done.
Within 36 months after the effective date of this AD, inspect the escape slides for the forward and aft entry and service doors to determine the Goodrich part number (P/N) and service bulletin number stenciled on the escape slide girts, and modify the escape slide assemblies, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 737-25-1491, dated April 23, 2007.
Note 1: Boeing Service Bulletin 737-25-1491, dated April 23, 2007, refers to Goodrich Service Bulletin 25-338, Revision 1, dated March 31, 2004, as an additional source of service information for modifying the escape slide assemblies.
Prior to or concurrently with accomplishing the actions required by paragraph (f) of this AD, do the applicable actions specified in paragraphs (g)(1), (g)(2), and (g)(3) of this AD.
(1) For Model 737-600, -700, and -800 series airplanes identified in Boeing Service Bulletin 737-25-1404, dated May 25, 2000, equipped with any escape slide having P/N 5A3307-1, P/N 5A3307-3, P/N 5A3086-3, or P/N 5A3088-3: Modify the escape slide latch assembly in accordance with Boeing Service Bulletin 737-25-1404, dated May 25, 2000, as required by paragraph (a) of AD 2001-15-01; or Boeing Service Bulletin 737-25-1404, Revision 1, dated April 18, 2002.
(2) For Model 737-600, -700, -700C, -800 and -900 series airplanes equipped with any escape slide having P/N 5A3086-3 or P/N 5A3088-3: Inspect the four escape slides to determine the part number and service bulletin number stenciled on the escape slide girts, and replace the trigger housing on the regulator valve with an improved trigger housing if BFGoodrich Service Bulletin 5A3086/5A3088-25-302 is not stenciled on the girt, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 737-25-1475, dated November 26, 2002. For airplanes identified as Group 2 in Boeing Special Attention Service Bulletin 737-25-1475, dated November 26, 2002, a records review may be done in lieu of the inspection to determine the part number.
Note 2: Boeing Special Attention Service Bulletin 737-25-1475, dated November 26, 2002, refers to Goodrich Service Bulletin 5A3086/5A3088-25-336, dated June 17, 2002, as an additional source of service information for replacing the trigger housing on the regulator valve with a new, improved trigger housing.
(3) For Model 737-600, -700, -700C, -800 and -900 series airplanes equipped with any escape slide having P/N 5A3307-1, P/N 5A3086-3, or P/N 5A3088-3; or P/N 5A3307-3 and BFGoodrich Service Bulletin 5A3307-25-309 stenciled on the girt: Replace the rod in the pilot valve regulator with a new, improved rod in accordance with BFGoodrich Service Bulletin 25-308, dated January 21, 2000.
For Model 737-600, -700, and -800 series airplanes identified in Boeing Special Attention Service Bulletin 737-25-1403, dated May 4, 2000: Accomplishing the replacement of the regulator piston plug in the vespel piston with a new piston plug, installation of a new insolate pad on the valise, and removal of the trigger housing cover, in accordance with Goodrich Service Bulletin 25-338, Revision 1, dated March 31, 2004, terminates the modification specified in Boeing Special Attention Service Bulletin 737-25-1403, dated May 4, 2000, as required by paragraph (a) of AD 2001-15-01. All other applicable actions required by paragraph (a) of AD 2001-15-01 must be fully complied with.
(i) For Model 737-600, -700, and -800 series airplanes: Installation of a cover assembly on the trigger housing of the inflation cylinder on the escape slides in accordance with Boeing Special Attention Service Bulletin 737-25-1403, Revision 1, dated November 29, 2001, terminates the corresponding action required by paragraph (a) of AD 2001-15-01. All other applicable actions required by paragraph (a) of AD 2001-15-01 must be fully complied with.
(j) For Model 737-600, -700, and -800 series airplanes: Modification of the escape slide latch assembly in accordance with Boeing Service Bulletin 737-25-1404, Revision 1, dated April 18, 2002, terminates the corresponding action required by paragraph (a) of AD 2001-15-01. All other applicable actions required by paragraph (a) of AD 2001-15-01 must be fully complied with.
