Boeing Alert Requirements Bulletin 737-53A1383 RB: Revision 1, text

TextPartly OCR

Some pages are OCR from a scan. OCR can misread letters and numbers.

Query with SQL

duckdb -csv -c "SELECT p.page, p.text_source, p.text, f.rights_holder, f.license
  FROM 'https://openairdocs.org/data/latest/service_document_file_page.parquet' p JOIN 'https://openairdocs.org/data/latest/service_document_file.parquet' f USING (file_sha256)
  WHERE p.file_sha256 = 'e299769dfb2bc006237d0566d109e782939a3d07fe7e5b370d2799ca776dcca9'
  ORDER BY p.page"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

SELECT p.page, p.text_source, p.text, f.rights_holder, f.license
FROM 'https://openairdocs.org/data/latest/service_document_file_page.parquet' p JOIN 'https://openairdocs.org/data/latest/service_document_file.parquet' f USING (file_sha256)
WHERE p.file_sha256 = 'e299769dfb2bc006237d0566d109e782939a3d07fe7e5b370d2799ca776dcca9'
ORDER BY p.page

Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.

Page 1Open in PDF

Commercial Airplanes 737 Requirements Bulletin ALERT Number: 737-53A1383 RB Original Issue: May 09, 2019 ATA System: 5313 SUBJECT: FUSELAGE - Structure Around Openings - Forward Galley Door Bear Strap Inspection Export of this technology is controlled under the United States Export Administration Regulations (EAR) (15 CFR 300-774). An export license may be required before it is used for development, production or use by foreign persons from specific countries. The controller of this data has the individual responsibility to abide by all export laws.

9E991ECCN:

Treatment of this document and its content is governed by contract with Boeing. Rights to use this document are licensed on a per aircraft basis and such rights may not be transferable. For more information, contact The Boeing Company.

Boeing, the Boeing signature, the Boeing symbol, 707, 717, 727, 737, 747, 757, 767, 777, 787, Dreamliner, BBJ, DC-8, DC-9, DC-10, KC-10, KC-46, KDC-10, MD-10, MD-11, MD-80, MD-88, MD-90, P-8, Poseidon and Boeing liveries are all trademarks owned by The Boeing Company; and no trademark license is granted in connection with this document unless provided in writing by Boeing.

Original Issue: May 09, 2019 737-53A1383 RB 1 of 33

3.0

Page 2Open in PDF

Original Issue: May 09, 2019 737-53A1383 RB 2 of 33 REQUIREMENTS BULLETIN 737-53A1383

ALERTALERT

BLANK PAGE

Page 3Open in PDF

Table of Contents

1. EFFECTIVITY5

A. Airplanes5

B. Spares Affected5

2. CONCURRENT REQUIREMENTS5

3. COMPLIANCE5

4. APPROVAL12

5. ACCOMPLISHMENT INSTRUCTIONS15

A. General Information15

B. Work Instructions16

FIGURE 1: FORWARD GALLEY DOOR BEAR STRAP - INTERNAL GENERAL VISUAL INSPECTION

.23

FIGURE 2: FORWARD GALLEY DOOR BEAR STRAP - INTERNAL SURFACE HIGH FREQUENCY EDDY

CURRENT (HFEC) INSPECTION25

FIGURE 3: FORWARD GALLEY DOOR BEAR STRAP - EXTERNAL GENERAL VISUAL INSPECTION

.28

FIGURE 4: FORWARD GALLEY DOOR BEAR STRAP - EXTERNAL EDDY CURRENT INSPECTIONS

.30

Original Issue: May 09, 2019 737-53A1383 RB 3 of 33 REQUIREMENTS BULLETIN 737-53A1383

ALERTALERT

Page 4Open in PDF

Original Issue: May 09, 2019 737-53A1383 RB 4 of 33 REQUIREMENTS BULLETIN 737-53A1383

ALERTALERT

BLANK PAGE

Page 5Open in PDF

THIS DOCUMENT IS SENT TO THE OPERATORS OF RECORD OF THE AIRPLANES SHOWN IN PARAGRAPH 1.A., EFFECTIVITY. IF AN AIRPLANE HAS BEEN LEASED OR SOLD, SEND THIS DOCUMENT TO THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS DOCUMENT TO THE NEW OWNER. THIS IS AN ENHANCED REQUIRED FOR COMPLIANCE DOCUMENT. THE BOEING

PROCESSES USED TO CREATE THE SERVICE BULLETIN (SB) AND THE REQUIREMENTS BULLETIN (RB) ENSURE THAT THE INFORMATION BETWEEN "RC START" AND "RC END" IN THE SB ARE IDENTICAL TO THE INFORMATION IN THE SAME SECTIONS (COMPLIANCE, WORK INSTRUCTIONS…) OF THE RB WHICH THE SB REFERS TO AS THE RELATED DOCUMENT.

1. EFFECTIVITY A. Airplanes This bulletin is applicable to 737-600, 737-700, 737-700C, 737-800, 737-900 Airplane(s), line number(s) 1-1762 in 1 Group(s).

B. Spares Affected None.

2. CONCURRENT REQUIREMENTS None.

3. COMPLIANCE The Federal Aviation Administration (FAA) will possibly release an Airworthiness Directive related to Boeing Requirements Bulletin 737-53A1383 RB. The Airworthiness Directive will possibly make the compliance tasks and times given in Boeing Requirements Bulletin 737-53A1383 RB mandatory..

For airplanes which have incorporated Boeing Business Jet (BBJ) Lower Cabin Altitude Supplemental Type Certificate (STC) ST01697SE (6500 feet maximum cabin altitude in lieu of 8000 feet) as referenced in Boeing SB 737-21-1149, the flight cycle related compliance times are different from those specified in this requirements bulletin. All initial compliance times (threshold and grace period) specified in flight cycles must be reduced to half of those specified in Requirements Bulletin 737-53A1383 RB. All repeat interval compliance times specified in flight cycles must be reduced to one-quarter of those specified in Requirements Bulletin 737-53A1383 RB.

Original Issue: May 09, 2019 737-53A1383 RB 5 of 33

Page 6Open in PDF

Accomplish the required actions, based on the applicable conditions in Table 1 or 2, in accordance with Accomplishment Instructions.

When more than one OPTION is given for a CONDITION, do only one of the OPTION numbers. When more than one ACTION is given for a CONDITION or an OPTION, do all of the ACTION numbers for that CONDITION or OPTION.

All airplanes must do one of the following Options:

– Option 1: Do Table 1 - Internal and External General Visual Inspection and Internal Surface High Frequency Eddy Current (HFEC) Inspection of the Forward Galley Door Bear Strap.

– Option 2: Do Table 2 - External General Visual Inspection and External Eddy Current Inspections of the Forward Galley Door Bear Strap.

Table 1: Option 1 - Internal and External General Visual Inspection and Internal Surface High Frequency Eddy Current (HFEC) Inspection of the Forward Galley Door Bear Strap Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Within 6,000 flight cycles after the original issue date of Requirements Bulletin 737- 53A1383 RB.

Before 15,000 total flight cycles.

Do an internal and external general visual inspection of the forward galley door bear strap, for any repair.

All airplanes -Before further flight.CONDITION 1 (ACTION 1):CONDITION 1:

Contact The Boeing Company for alternative inspection(s) to the Requirements Bulletin 737-53A1383 RB, and do the inspection(s) and applicable on-condition action(s).

ANY REPAIR FOUND.

(a) -Before further flight.CONDITION 1 (ACTION 2):

Do an internal surface HFEC inspection of the forward galley door bear strap, for any crack at the unrepaired areas.

-Before further flight.CONDITION 1.1 (ACTION 1):CONDITION 1.1:

Contact The Boeing Company for repair instructions and do the repair.

ANY CRACK FOUND.

18,000 flight cycles.-CONDITION 1.1 (ACTION 2):

Repeat the internal surface HFEC inspection of the forward galley door bear strap, for any crack.

Original Issue: May 09, 2019 737-53A1383 RB 6 of 33 REQUIREMENTS BULLETIN 737-53A1383

ALERTALERT

Page 7Open in PDF

Table 1: Option 1 - Internal and External General Visual Inspection and Internal Surface High Frequency Eddy Current (HFEC) Inspection of the Forward Galley Door Bear Strap Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition 18,000 flight cycles.-Repeat the internal surface HFEC inspection of the forward galley door bear strap, for any crack.

CONDITION 1.2:

NO CRACK FOUND.

(b) -Before further flight.Do an internal surface HFEC inspection of the forward galley door bear strap, for any crack.

CONDITION 2:

NO REPAIR FOUND.

-Before further flight.CONDITION 2.1 (ACTION 1):CONDITION 2.1:

Contact The Boeing Company for repair instructions and do the repair.

ANY CRACK FOUND.

18,000 flight cycles.-CONDITION 2.1 (ACTION 2):

Repeat the internal surface HFEC inspection of the forward galley door bear strap, for any crack.

(b) 18,000 flight cycles.-Repeat the internal surface HFEC inspection of the forward galley door bear strap, for any crack.

CONDITION 2.2:

NO CRACK FOUND.

(b)

(a) It is not required to contact Boeing, if one or a combination of the following repairs has been installed.

1. Remove and replace gap cover in accordance with Boeing installation drawings (141A8350),

2. Up to second oversized fastener holes in accordance with 737-600 SRM 51-40-05, or 737-700 SRM 51-40-05, or 737-700CONV SRM 51-40-05, or 737-700IGW (BBJ) SRM 51-40-05, or 737- 800 SRM 51-40-05, or 737-800BCF SRM 51-40-05 or 737-900 SRM 51-40-05.

3. Skin blend out within the 737-600 SRM 53-00-01, or 737-700 SRM 53-00-01, or 737-700CONV SRM 53-00-01, or 737-700IGW (BBJ) SRM 53-00-01, or 737-800 SRM 53-00-01, or 737-800BCF SRM 53-00-01, or 737-900 SRM 53-00-01 allowable damage.

Original Issue: May 09, 2019 737-53A1383 RB 7 of 33 REQUIREMENTS BULLETIN 737-53A1383

ALERTALERT

Page 8Open in PDF

(b) It is not required to do the internal surface HFEC inspection in areas where a repair covers the affected inspection zone if the repair meets the conditions that follow:

1. The repair is the corrective action to the crack condition identified in Requirements Bulletin 737- 53A1383 RB and installed after the original issue date of Requirements Bulletin 737-53A1383

RB, AND

2. The installed repair was approved by the Boeing Organization Designation Authorization (ODA) via a FAA Form 8100-9.

Table 2: Option 2 - External General Visual Inspection and External Eddy Current Inspections of the Forward Galley Door Bear Strap and skin Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Within 6,000 flight cycles after the original issue date of Requirements Bulletin 737- 53A1383 RB.

Before 15,000 total flight cycles.

Do the external general visual inspection of the gap cover and skin in the forward galley door bear strap eddy current inspection zones, for any repair.

All airplanes -Before further flight.Contact The Boeing Company for alternative inspection(s) to the Requirements Bulletin 737- 53A1383 RB, and do the inspection(s) and applicable on-condition action(s).

CONDITION 3:

ANY EXTERNAL RE- PAIR FOUND.

(a) -Before further flight.Do the external LFEC inspection of the forward galley door bear strap and external HFEC inspection of the skin for any crack.

CONDITION 4:

NO EXTERNAL RE- PAIR FOUND.

-Before further flight.CONDITION 4.1 (ACTION 1):CONDITION 4.1:

Contact The Boeing Company for repair instructions and do the repair.

ANY CRACK FOUND

DURING THE EXTER-

NAL LFEC AND HFEC

EDDY CURRENT IN- SPECTIONS. -Before further flight.CONDITION 4.1 (ACTION 2):Do an internal general visual inspection of the forward galley door bear strap, for any repair.

Original Issue: May 09, 2019 737-53A1383 RB 8 of 33 REQUIREMENTS BULLETIN 737-53A1383

ALERTALERT

Page 9Open in PDF

Table 2: Option 2 - External General Visual Inspection and External Eddy Current Inspections of the Forward Galley Door Bear Strap and skin Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flight.CONDITION 4.1.1 (ACTION 1):CONDITION 4.1.1:

Contact The Boeing Company for alternative inspection(s) to the Requirements Bulletin 737- 53A1383 RB, and do the inspection(s) and applicable on-condition action(s).

ANY INTERNAL RE- PAIR FOUND.

(b) -Before further flight.CONDITION 4.1.1 (ACTION 2):

Do an internal surface HFEC inspection of the forward galley door bear strap, for any crack at the unrepaired areas.

-Before further flight.CONDITION 4.1.1.1 (ACTION 1):CONDITION 4.1.1.1:

Contact The Boeing Company for repair instructions and do the repair.

ANY CRACK FOUND

DURING THE INTER-

NAL SURFACE HFEC

INSPECTION, WITH

AN INTERNAL REPAIR FOUND.

18,000 flight cycles.-CONDITION 4.1.1.1 (ACTION 2):

Repeat the internal surface HFEC inspection of the forward galley door bear strap, for any crack.

(c) 18,000 flight cycles.-Repeat the internal surface HFEC inspection of the forward galley door bear strap, for any crack.

CONDITION 4.1.1.2:

NO CRACK FOUND

DURING THE INTER-

NAL SURFACE HFEC

INSPECTION, WITH

AN INTERNAL REPAIR FOUND.

CONDITION 4.1.2:

NO INTERNAL RE- PAIR FOUND.

-Before further flight.CONDITION 4.1.2.1 (ACTION 1):CONDITION 4.1.2.1:

Contact The Boeing Company for repair instructions and do the repair.

ANY CRACK FOUND

DURING THE INTER-

NAL SURFACE HFEC

INSPECTION, WITH

NO INTERNAL RE- PAIR FOUND.

18,000 flight cycles.-CONDITION 4.1.2.1 (ACTION 2):

Repeat the internal surface HFEC inspection of the forward galley door bear strap, for any crack.

Original Issue: May 09, 2019 737-53A1383 RB 9 of 33 REQUIREMENTS BULLETIN 737-53A1383

ALERTALERT

Page 10Open in PDF

Table 2: Option 2 - External General Visual Inspection and External Eddy Current Inspections of the Forward Galley Door Bear Strap and skin Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition 18,000 flight cycles.-Repeat the internal surface HFEC inspection of the forward galley door bear strap, for any crack.

CONDITION 4.1.2.2:

NO CRACK FOUND

DURING THE INTER-

NAL SURFACE HFEC

INSPECTION, WITH

NO INTERNAL RE- PAIR FOUND.

Do an internal general visual inspection of the forward galley door bear strap, for any repair.

CONDITION 4.2:

NO CRACK FOUND

DURING EXTERNAL

EDDY CURRENT IN- SPECTIONS.

(d) -Before further flight.CONDITION 4.2.1 (ACTION 1):CONDITION 4.2.1:

Contact The Boeing Company for alternative inspection(s) to the Requirements Bulletin 737- 53A1383 RB, and do the inspection(s) and applicable on-condition action(s).

ANY INTERNAL RE- PAIR FOUND.

(b) -Before further flight.CONDITION 4.2.1 (ACTION 2):

Do an internal surface HFEC inspection of the forward galley door bear strap, for any crack at the unrepaired areas.

-Before further flight.CONDITION 4.2.1.1 (ACTION 1):CONDITION 4.2.1.1:

Contact The Boeing Company for repair instructions and do the repair.

ANY CRACK FOUND

DURING THE INTER-

NAL SURFACE HFEC

INSPECTION, WITH

AN INTERNAL REPAIR FOUND.

18,000 flight cycles.-CONDITION 4.2.1.1 (ACTION 2):

Repeat the internal surface HFEC inspection of the forward galley door bear strap, for any crack.

(c) 18,000 flight cycles.-Repeat the internal surface HFEC inspection of the forward galley door bear strap, for any crack.

CONDITION 4.2.1.2:

NO CRACK FOUND

DURING THE INTER-

NAL SURFACE HFEC

INSPECTION, WITH

AN INTERNAL REPAIR FOUND.

Original Issue: May 09, 2019 737-53A1383 RB 10 of 33 REQUIREMENTS BULLETIN 737-53A1383

ALERTALERT

Page 11Open in PDF

Table 2: Option 2 - External General Visual Inspection and External Eddy Current Inspections of the Forward Galley Door Bear Strap and skin Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flight.Do an internal surface HFEC inspection of the forward galley door bear strap, for any crack.

CONDITION 4.2.2:

NO INTERNAL RE- PAIR FOUND.

-Before further flight.CONDITION 4.2.2.1 (ACTION 1):CONDITION 4.2.2.1:

Contact The Boeing Company for repair instructions and do the repair.

ANY CRACK FOUND

DURING THE INTER-

NAL SURFACE HFEC

INSPECTION, WITH

NO INTERNAL RE- PAIR FOUND.

18,000 flight cycles.-CONDITION 4.2.2.1 (ACTION 2):

Repeat the internal surface HFEC inspection of the forward galley door bear strap, for any crack.

(c) 18,000 flight cycles.-Repeat the internal surface HFEC inspection of the forward galley door bear strap, for any crack.

CONDITION 4.2.2.2:

NO CRACK FOUND

DURING THE INTER-

NAL SURFACE HFEC

INSPECTION, WITH

NO INTERNAL RE- PAIR FOUND.

(c)

(a) It is not required to contact Boeing, if one or a combination of the following repairs has been installed:

1. Remove and replace gap cover in accordance with Boeing installation drawings (141A8350),

(b) It is not required to contact Boeing if one or a combination of the following repairs has been installed:

1. Up to second oversized fastener holes in accordance with 737-600 SRM 51-40-05, or 737-700 SRM 51-40-05, or 737-700CONV SRM 51-40-05, or 737-700IGW (BBJ) SRM 51-40-05, or 737- 800 SRM 51-40-05, or 737-800BCF SRM 51-40-05 or 737-900 SRM 51-40-05.

2. Bear strap blend out within the 737-600 SRM 53-00-01, or 737-700 SRM 53-00-01, or 737- 700CONV SRM 53-00-01, or 737-700IGW (BBJ) SRM 53-00-01, or 737-800 SRM 53-00-01, or 737-800BCF SRM 53-00-01, or 737-900 SRM 53-00-01 allowable damage.

Original Issue: May 09, 2019 737-53A1383 RB 11 of 33 REQUIREMENTS BULLETIN 737-53A1383

ALERTALERT

Page 12Open in PDF

(c) It is not required to do the internal surface HFEC inspection in areas where a repair covers the affected inspection zone if the repair meets the conditions that follow:

1. The repair is the corrective action to the crack condition identified in Requirements Bulletin 737- 53A1383 RB and installed after the original issue date of Requirements Bulletin 737-53A1383

RB, AND

2. The installed repair was approved by the Boeing Organization Designation Authorization (ODA) via a FAA Form 8100-9.

(d) For airplanes which have incorporated Boeing Business Jet (BBJ) Lower Cabin Altitude Supplemental Type Certificate (STC) ST01697SE, the first inspection interval should be reduced to one quarter.

4. APPROVAL This Requirements Bulletin was examined by the Federal Aviation Administration (FAA). The changes specified in this document 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 document and its approval were based on the airplane in its original Boeing delivery configuration or as modified by other Boeing changes.

If an airplane has a non-Boeing modification or repair that affects a component or system also affected by this Requirements Bulletin, the operator is responsible for obtaining appropriate regulatory agency approval before incorporating this Requirements Bulletin.

This Requirements Bulletin is also approved for airplanes converted into 737-800BCF under project number TS14-0042 that have incorporated Boeing drawing 800A0003 specified in the Type Certification Data Sheet A16WE.

This Requirements Bulletin is also approved for 737-700/-800/-900 airplanes having FAA Aviation Partners Boeing (APB) Supplemental Type Certificate (STC) number ST00830SE installed (not including any areas affected by the split scimitar winglet configuration).

NOTE: THE APPROVAL STATEMENT THAT FOLLOWS IS FOR 737-700C AIRPLANES ONLY.

This Requirements Bulletin was examined by the Federal Aviation Administration (FAA). The changes specified in this document comply with the applicable regulations and are FAA approved for all airplanes listed in the service bulletin effectivity. This document and its approval were based on the airplane in its original Boeing delivery configuration or as modified by other approved Boeing changes.

Original Issue: May 09, 2019 737-53A1383 RB 12 of 33 REQUIREMENTS BULLETIN 737-53A1383

ALERTALERT

Pages 13–24 of 33