AD 2009-20-11

final rule

Airworthiness Directives; Boeing Model 737-300, -400, and -500 Series Airplanes Equipped With a Digital Transient Suppression Device (DTSD) Installed in Accordance With Supplemental Type Certificate (STC) ST00127BO

AD Number
2009-20-11
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. FAA-2009-0521
FR Citation
74 FR 68135
Technical illustration of an aircraft fuel pump, filter, valve, and lines
Problem area Fuel system

Applicability

TypeManufacturerModelDetails
aircraft The Boeing Company 737-300 Series Airworthiness Directives; Boeing Model 737-300, -400, and -500 Series Airplanes Equipped With a Digital Transient Suppression Device (DTSD) Installed in Accordance With Supplemental Type Certificate (STC) ST00127BO
aircraft The Boeing Company 737-400 Series Airworthiness Directives; Boeing Model 737-300, -400, and -500 Series Airplanes Equipped With a Digital Transient Suppression Device (DTSD) Installed in Accordance With Supplemental Type Certificate (STC) ST00127BO
aircraft The Boeing Company 737-500 Series Airworthiness Directives; Boeing Model 737-300, -400, and -500 Series Airplanes Equipped With a Digital Transient Suppression Device (DTSD) Installed in Accordance With Supplemental Type Certificate (STC) ST00127BO

Unsafe Condition

Failure of the Digital Transient Suppression Device (DTSD) could lead to improper operation of the fuel system, potentially resulting in unsafe conditions.

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Revise the maintenance program to include new fuel system limitations for airplanes modified in accordance with Supplemental Type Certificate ST00127BO. Inspect and check the DTSDs, and perform corrective actions if necessary.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Before further flight

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

Boeing Model 737-300, -400, and -500 series airplanes equipped with a Digital Transient Suppression Device (DTSD) installed in accordance with Supplemental Type Certificate (STC) ST00127BO.

AI-generated summary from the source AD text. Verify against the official source before acting.

Federal Register Abstract

The FAA is correcting information in an existing airworthiness directive (AD) that was published in the Federal Register on October 1, 2009. The error resulted in use of an outdated division name and e-mail address in the vendor contact information. This AD applies to certain Boeing Model 737-300, -400, and -500 series airplanes. This AD requires revising the maintenance program to include new fuel system limitations for airplanes modified in accordance with STC ST00127BO. This AD also requires inspections and checks of the DTSDs and corrective actions, if necessary.

Document Text

Show stored source text (verify against official source)
[Federal Register Volume 74, Number 245 (Wednesday, December 23, 2009)]
[Rules and Regulations]
[Pages 68135-68136]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: E9-30418]


-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2009-0521; Directorate Identifier 2008-NM-187-AD; 
Amendment 39-16034; AD 2009-20-11]
RIN 2120-AA64


Airworthiness Directives; Boeing Model 737-300, -400, and -500 
Series Airplanes Equipped With a Digital Transient Suppression Device 
(DTSD) Installed in Accordance With Supplemental Type Certificate (STC) 
ST00127BO

AGENCY: Federal Aviation Administration (FAA), Department of 
Transportation (DOT).

ACTION: Final rule; correction.

-----------------------------------------------------------------------

SUMMARY: The FAA is correcting information in an existing airworthiness 
directive (AD) that was published in the Federal Register on October 1, 
2009. The error resulted in use of an outdated division name and e-mail 
address in the vendor contact information. This AD applies to certain 
Boeing Model 737-300, -400, and -500 series airplanes. This AD requires 
revising the maintenance program to include new fuel system limitations 
for airplanes modified in accordance with STC ST00127BO. This AD also 
requires inspections and checks of the DTSDs and corrective actions, if 
necessary.

DATES: Effective November 5, 2009.

ADDRESSES: You may examine the AD docket on the Internet at <a href="http://www.regulations.gov">http://www.regulations.gov</a>; or in person at the Docket Management Facility 
between 9 a.m. and 5 p.m., Monday through Friday, except Federal 
holidays. The AD docket contains this AD, the regulatory evaluation, 
any comments received, and other information. The address for the 
Docket Office (telephone 800-647-5527) is the Document Management 
Facility, U.S. Department of Transportation, Docket Operations, M-30, 
West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE., 
Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: Marc Ronell, Aerospace Engineer, ANE-
150, FAA, Boston Aircraft Certification Office, 12 New England 
Executive Park, Burlington, Massachusetts 01803; telephone (781) 238-
7776; fax (781) 238-7170.

SUPPLEMENTARY INFORMATION: On September 18, 2009, the FAA issued AD 
2009-20-11, Amendment 39-16034 (74 FR 50683, October 1, 2009), for 
certain Boeing Model 737-300, -400, and -500 series airplanes. The AD 
requires revising the maintenance program to include new fuel system 
limitations for airplanes modified in accordance with Supplemental Type 
Certificate ST00127BO. This AD also requires inspections and checks of 
the digital transient suppression device and corrective actions, if 
necessary.
    As published, the vendor contact information specified in the 
Addresses section of the preamble and paragraph (n)(2) of the 
regulatory text of AD 2009-20-11 contained an outdated division name 
and e-mail address. Since that AD was published, the vendor has 
provided us with the recently updated contact information.
    No other part of the regulatory information has been changed; 
therefore, the final rule is not republished in the Federal Register.
    The effective date of this AD remains November 5, 2009.

0
Correction of non-regulatory text:
    In the Federal Register of October 1, 2009, on page 50683, in the 
second column, the ADDRESSES section of AD 2009-20-11 is corrected to 
read as follows:

``ADDRESSES: For service information identified in this AD, contact 
Goodrich Corporation, Sensors and Integrated Systems (Formerly Fuel and 
Utility Systems), 100 Panton Road, Vergennes, Vermont 05491-1008; 
telephone 802-877-4476; e-mail <a href="/cdn-cgi/l/email-protection#a9fae0fa87fdcccac1f9dccbda84fffde9eec6c6cddbc0cac187cac6c4"><span class="__cf_email__" data-cfemail="6f3c263c413b0a0c073f1a0d1c42393b2f2800000b1d060c07410c0002">[email&#160;protected]</span></a>; Internet 
<a href="http://www.goodrich.com/TechPubs">http://www.goodrich.com/TechPubs</a>.''

0
Correction of regulatory text:


Sec.  39.13  [Corrected]

0
In the Federal Register of October 1, 2009, on page 50685, in the 
second column, paragraph (n)(2) of AD 2009-20-11 is corrected to read 
as follows:
* * * * *
    (2) For service information identified in this AD, contact Goodrich 
Corporation, Sensors and Integrated Systems (Formerly Fuel and Utility 
Systems), 100 Panton Road, Vergennes, Vermont 05491-1008; telephone 
802-

[[Page 68136]]

877-4476; e-mail <a href="/cdn-cgi/l/email-protection#3e6d776d106a5b5d566e4b5c4d13686a7e7951515a4c575d56105d5153"><span class="__cf_email__" data-cfemail="5c0f150f7208393f340c293e2f710a081c1b3333382e353f34723f3331">[email&#160;protected]</span></a>; Internet <a href="http://www.goodrich.com/TechPubs">http://www.goodrich.com/TechPubs</a>.
* * * * *

    Issued in Renton, Washington, on December 11, 2009.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. E9-30418 Filed 12-22-09; 8:45 am]
BILLING CODE 4910-13-P

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Retrieved: Apr 4, 2026

Rights: U.S. Government Public Domain

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