Commercial 

Airplanes 737

Service Bulletin

SPECIAL ATTENTION

Number: 737-52-1154

Original Issue: December 17, 2010

Revision 1: August 03, 2011

ATA System: 5231

SUBJECT: DOORS - Cargo Compartment Doors - Aft Cargo Door - Cross Beam D Inspection,

Repair and Preventive Modification

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BOEING SERVICE BULLETIN 737-52-1154

BLANK PAGE
Commercial 

Airplanes 737

Service Bulletin

SPECIAL ATTENTION

Short Form Revision Number: 737-52-1154

Original Issue: December 17, 2010

Revision 1: August 03, 2011

ATA System: 5231

SUBJECT: DOORS - Cargo Compartment Doors - Aft Cargo Door - Cross Beam D Inspection,

Repair and Preventive Modification

Revision 1 is sent to change information. Only the changed information is described below. The Original Issue

and Revision 1 are necessary to do the service bulletin.

COMPLIANCE INFORMATION RELATED TO THIS REVISION

No more work is necessary on the airplane(s) changed in accordance with the original issue of this service

bulletin.

REASON FOR REVISION

This revision is sent to correct the inspection instructions in Paragraph 3.B.2.h.(1). In the original issue of this

service bulletin, Paragraph 3.B.2.h.(1) incorrectly tells operators to do alternative inspections in accordance with

FIGURE 11. In this revision, Paragraph 3.B.2.h.(1) is changed to tell operators to do alternative inspections in

accordance with Part 11.

REVISION HISTORY

Original Issue: December 17, 2010

Revision 1: August 03, 2011

EFFECTIVITY

All 737-100/-200/-200C/-300/-400/-500 Airplanes. Refer to Paragraph 1.A.1. in the original issue of this service

bulletin for the list of affected airplanes.

APPROVAL

This service bulletin was examined by the Federal Aviation Administration (FAA). The changes specified in this

service bulletin comply with the applicable regulations and are FAA approved, as well as European Aviation

Safety Agency (EASA)/Joint Aviation Authorities (JAA) approved for all EASA/JAA approved airplanes listed in

the service bulletin effectivity. This service bulletin and its approval were based on the airplane in its original

Boeing delivery configuration or as modified by other approved Boeing changes.

If an airplane has a non-Boeing modification or repair that affects a component or system also affected by this

service bulletin, the operator is responsible for obtaining appropriate regulatory agency approval before

incorporating this service bulletin.

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For airplanes identified in this service bulletin, initial release, the repairs and/or modifications of this service

bulletin have been reviewed as required by paragraphs (g) and (i) of Airworthiness Directive AD 2008-08-23,

paragraphs (e) and (g) of Airworthiness Directive AD 98-11-04 R1, and paragraphs (g) and (i) of Airworthiness

Directive AD 2008-09-13. The repairs and/or modifications are found to affect Structurally Significant Item F-1

of Supplemental Structural Inspection Document, D6-82669, but the F-1 inspections remain effective with the

repairs and/or modifications installed. Therefore, an alternative inspection is not necessary for F-1. Do the

existing F-1 inspections as required per paragraphs (g), (h) and (i) of Airworthiness Directive AD 2008-08-23,

paragraphs (b) and (c) of Airworthiness Directive AD 98-11-04 R1, and paragraphs (g), (h) and (i) of Airworthiness

Directive AD 2008-09-13.

EXISTING INFORMATION

In the original issue of this service bulletin, the existing information on page 53, Paragraph 3.B.2.h.(1) reads:

Do an Ultrasonic inspection of the door frames in accordance with FIGURE 15. As an alternative, do the detailed

inspections in accordance with FIGURE 11.

CHANGED INFORMATION

Paragraph 3.B.2.h.(1) is changed to read:

Do an Ultrasonic inspection of the door frames in accordance with FIGURE 15. As an alternative, do the detailed

inspections in accordance with Part 11.

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BOEING SERVICE BULLETIN 737-52-1154