Airworthiness Directive · Amendment 39-22750 · Equipment/furnishings
The Boeing Company Airplanes
This AD applies to The Boeing Company Model 757-200, -200PF, -200CB, and -300 series airplanes, certificated in any category, as identified in Boeing Alert Requirements Bulletin 757-25A0319 RB, dated March 24, 2023.
The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 757 airplanes. This AD was prompted by reports of operators finding frequent and severe damage to the blowout vent grilles throughout the lower lobe cargo compartment. This AD requires repetitive detailed inspections of certain decompression panels and pressure equalization valves, as applicable, in the forward and aft lower lobe cargo compartments for damage, and applicable on- condition actions. For certain airplanes, this AD also requires installation of decompression panels with billet grilles. For other certain airplanes, this AD also requires replacement of a certain soft bulkhead with a rigid bulkhead. For certain other airplanes, this AD requires installation of doublers to a certain bulkhead assembly panel. The FAA is issuing this AD to address the unsafe condition on these products.
Except as specified by paragraph (h) of this AD: At the applicable times specified in the “Compliance” paragraph of Boeing Alert Requirements Bulletin 757-25A0319 RB, dated March 24, 2023, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin 757-25A0319 RB, dated March 24, 2023.
Note 1 to paragraph (g): Guidance for accomplishing the actions required by this AD can be found in Boeing Alert Service Bulletin 757-25A0319, dated March 24, 2023, which is referred to in Boeing Alert Requirements Bulletin 757-25A0319 RB, dated March 24, 2023.
(1) For all airplanes: Where the Compliance Time columns of the tables in the “Compliance” paragraph of Boeing Alert Requirements Bulletin 757-25A0319 RB, dated March 24, 2023, refer to the original issue date of Requirements Bulletin 757-25A0319 RB, this AD requires using the effective date of this AD.
(2) For Groups 1, 2, and 4 airplanes identified in Boeing Alert Requirements Bulletin 757-25A0319 RB, dated March 24, 2023, that have been converted from a passenger to freighter configuration in accordance with VT Mobile Aerospace Engineering (MAE) Inc. Supplemental Type Certificate (STC) ST04242AT or STC ST03562AT or Precision Conversions LLC STC ST01529SE: Where the Compliance Time columns of tables 1, 2, 3, and 5 in the “Compliance” paragraph of Boeing Alert Requirements Bulletin 757-25A0319 RB, dated March 24, 2023, specify “Within 5,425 Flight Hours” and “Within 16 months,” this AD requires replacing that text with “Within 9,000 Flight Hours” and “Within 36 months,” respectively.
(3) For Group 6 airplanes identified in Boeing Alert Requirements Bulletin 757-25A0319 RB, dated March 24, 2023: Where the Compliance Time column of table 7 in the “Compliance” paragraph of Boeing Alert Requirements Bulletin 757-25A0319 RB, dated March 24, 2023, specifies “Within 5,425 Flight Hours” and “Within 16 months,” this AD requires replacing that text with “Within 9,000 Flight Hours” and “Within 36 months,” respectively.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
