# STC SA553NE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Leading Edge Group LLC, The, United States
- Description: Installation of 425 or 500 U.S. gallon auxiliary fuel system in aft cargo compartment. 
CONFIGURATION 2, is eligible on 737-300 series airplanes S/N 23743 and 23930 through 23937
- Applied: November 3, 1987
- Status date: April 27, 2009
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21, Part 25
- Data sheets: [TCDS A16WE](https://openairdocs.org/tcds/A16WE)
- Certificate PDF: https://openairdocs.org/files/sha256/63/0a/630af288e88fdcd17bd3b2351debe59fba80d288f7c6555fb3b272b675d54573
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C11BA7C7EFE492B88625760F0046D7B7.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA553NE

## ADs that name it (1)

- [AD 2008-22-01](https://openairdocs.org/ad/2008-22-01): Auxiliary fuel tanks · Boeing 727-100 Series, 727-200 Series, 727 Series and 17 more. Effective Nov 26, 2008. Named in the applicability

## Approved models (2)

- The Boeing Company 737-300 Series ([TCDS A16WE](https://openairdocs.org/tcds/A16WE))
- The Boeing Company 737-400 Series ([TCDS A16WE](https://openairdocs.org/tcds/A16WE))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

Number SA553NE

This certificate issued to

Part 25 of the Federal Aviation Regulations.

Installation of 425 or 500 U.S. gallon auxiliary fuel system in aft cargo compartment in accordance with PATS, Inc. Master Drawing List Drawing:

Configuration 1: No. 300-1-000, Revision F dated January 24, 1990 (425 U.S. Gallons);

OR Configuration 2: No. 300-1-001, Revision F dated January 24, 1990 (425 U.S. Gallons);

OR Configuration 3: No. 300-1-002, Revision F dated January 24, 1990 (500 U.S. Gallons);

1. Configurations 1, 5, and 7 are eligible only on 737-300 series airplanes.

2. Configuration 2 is eligible only on 737-300 series airplanes S/N 23743 and 23930 through 23937.

3. Configuration 3 is eligible only on 737-400 series airplanes.

4. Configuration 4 is eligible only on 737-300 series airplanes equipped with Boeing Auxiliary Fuel Provisions identified on PATS, Inc. MDL 300-1-003, Rev. D dated January 24, 1990.

The Leading Edge Group, LLC 5400 Carillon Point Kirkland, WA 98033 A16WE Make : Boeing Model : 737-300 and –400 Series Date reissued : July 20, 2004, April 27, 2009

Date amended : 2/12/88, 5/2/88, 6/2/88, 9/28/88, 10/11/88, 4/25/89, 8/25/89, 8/31/89, 10/27/89, 6/11/90, 3/11/91, 1/25/94

( Signature) Anthony Socias Manager New York Aircraft Certification Office

( Title)

Date of application : November 3, 1987

Date of issuance : January 15, 1988

FAA Form 8110-2-1(10-69) Page 2 of 2

Number SA553NE Date of Reissuance: July 20, 2004, April 27, 2009

Description of Type Design Change:(Cont.):

Configuration 4: No. 300-1-003, Revision D dated January 24, 1990 (425 U.S. Gallons);

OR Configuration 5: No. 300-1-001, Revision F dated January 24, 1990 (425 U.S. Gallons);

OR Configuration 6: No. 300-1-004, Revision A dated January 24, 1990 (425 U.S. Gallons);

OR Configuration 7: No. 300-1-000, Revision F dated January 24, 1990 and ECO G-1, including ADCN’s 1, 2, 3, 4, and 5 (500 U.S.

Gallons).

Limitations and Conditions:(Cont’d):

5. Configuration 6 is eligible only on 737-400 series airplanes equipped with Boeing Auxiliary Fuel Provisions identified on PATS, Inc. MDL 300-1-004, Rev. A dated January 24, 1990.

6. a) PATS, Inc. Airplane Flight Manual Supplement No. 7, FAA approved January 15, 1989, is required with Configurations 1, 2, 4, 5, and 6.

b) PATS, Inc. Airplane Flight Manual Supplement No. 1, FAA approved September 28, 1988, is required with Configuration 3.

c) PATS, Inc. Airplane Flight Manual Supplement No. 12, FAA approved January 25, 1994, is required with Configuration

7. Auxiliary Fuel Tanks are life-limited to 20 years time in service.

8. PATS, Inc. Long Range Fuel Tanks Maintenance Manual entitled “Boeing 737-300 and 737-400 Auxiliary Fuel Tank Maintenance Manual Installed in Accordance with Configurations One thru Six STC SA553NE” Revision A dated June 5, 1992, or later approved revisions, applies to Configurations 1 through 6.

9. PATS, Inc. Long Range Fuel Tanks Maintenance Manual entitled “Boeing 737-300 Auxiliary Fuel System Installed in Accordance with STC SA553NE Configuration 7 500 Gallon Aux Tank” dated December 17, 1993, or later approved revisions, applies to Configuration 7.

10. If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission.

11. The installer must determine whether this design change is compatible with previously approved modifications.

…End…

## Every issue (1)

- April 27, 2009: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/63/0a/630af288e88fdcd17bd3b2351debe59fba80d288f7c6555fb3b272b675d54573)

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