Airworthiness Directive · Amendment 39-19558 · Equipment/furnishings
The Boeing Company Airplanes
Superseded. A later AD replaced this one: AD 2020-17-04. Comply with the one in force.
This AD applies to The Boeing Company Model 737-300, -400, and -500 series airplanes, certificated in any category, as identified in the service information specified in paragraphs (c)(1) and (c)(2) of this AD.
(1) Boeing Service Bulletin 737-25-1728, dated October 10, 2016.
(2) Boeing Requirements Bulletin 737-25-1758 RB, dated November 8, 2017.
We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 737-300, -400, and -500 series airplanes. This AD was prompted by a report indicating the passenger service units (PSUs) became separated from their attachments during several survivable accident sequences. This AD requires installing lanyard assemblies on the PSU and, for certain airplanes, on the life vest panel. We are issuing this AD to address the unsafe condition on these products.
(1) For airplanes identified in Boeing Service Bulletin 737-25-1728, dated October 10, 2016: Except as required by paragraph (h)(1) of this AD, at the applicable times specified in paragraph 1.E., “Compliance,” of Boeing Service Bulletin 737-25-1728, dated October 10, 2016, do all applicable actions identified as “RC” (required for compliance) in, and in accordance with, the Accomplishment Instructions of Boeing Service Bulletin 737-25-1728, dated October 10, 2016.
(2) For airplanes identified in Boeing Requirements Bulletin 737-25-1758 RB, dated November 8, 2017: Except as required by paragraph (h)(2) of this AD, at the applicable times specified in the “Compliance” paragraph of Boeing Requirements Bulletin 737-25-1758 RB, dated November 8, 2017, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Requirements Bulletin 737-25-1758 RB, dated November 8, 2017.
Note 1 to paragraph (g)(2) of this AD: Guidance for accomplishing the actions required by paragraph (g)(2) of this AD can be found in Boeing Service Bulletin 737-25-1758, dated November 8, 2017, which is referred to in Boeing Requirements Bulletin 737-25-1758 RB, dated November 8, 2017.
(1) For purposes of determining compliance with the requirements of this AD: Where Boeing Service Bulletin 737-25-1728, dated October 10, 2016, uses the phrase “the original issue date of this service bulletin,” this AD requires using “the effective date of this AD.”
(2) For purposes of determining compliance with the requirements of this AD: Where Boeing Requirements Bulletin 737-25-1758 RB, dated November 8, 2017, uses the phrase “the original issue date of the Requirements Bulletin (RB),” this AD requires using “the effective date of this AD.”
