AD 87-26-03

final rule
Data completeness: 70%

BOEING Model 737 Series Airplanes

AD Number
87-26-03
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Unknown
FR Citation
This information is not available.

Applicability

TypeManufacturerModelDetails
aircraft The Boeing Company 737-100 Series BOEING Model 737 Series Airplanes
aircraft The Boeing Company 737-200 Series BOEING Model 737 Series Airplanes
aircraft The Boeing Company 737-200C Series BOEING Model 737 Series Airplanes
aircraft The Boeing Company 737-300 Series BOEING Model 737 Series Airplanes
aircraft The Boeing Company 737-400 Series BOEING Model 737 Series Airplanes
aircraft The Boeing Company 737-500 Series BOEING Model 737 Series Airplanes
aircraft The Boeing Company 737-600 Series BOEING Model 737 Series Airplanes
aircraft The Boeing Company 737-700 Series BOEING Model 737 Series Airplanes
aircraft The Boeing Company 737-800 Series BOEING Model 737 Series Airplanes

Unsafe Condition

Electromagnetic interference may cause misleading localizer deviation indications to the flight crew.

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Required Actions

Replace weather radar receiver-transmitters with modified units; install 10 db attenuators on localizer coaxial cables; replace Bendix VHF navigation receivers with modified versions; modify wire bundles and routing for Model 737-300 EFIS-equipped airplanes as per Boeing Service Bulletin 737-34A1208, Rev 1.

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Compliance Time

within the next year after the effective date of this AD

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Affected Aircraft

Boeing Model 737 series airplanes specified in Boeing Service Bulletin 737-34A1208, Rev 1, dated May 14, 1987, certificated in any category.

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Source: Official FAA Source ↗

Retrieved: Apr 8, 2026

Rights: U.S. Government Public Domain

This site is not affiliated with or endorsed by the FAA. Always verify with official sources.

View Official Source ↗ Find More ADs for The Boeing Company 737-100 Series

Related Airworthiness Directives

2008-10-09 R1

final rule

Airworthiness Directives; The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 Series Airplanes

Unsafe Condition: FAA-approved maintenance program

Effective: Jan 15, 2010 Category: aircraft

2004-03-34 R1

final rule

Airworthiness Directives; Boeing Model 737-100, -200, -200C, - 300, -400, and -500 Series Airplanes

Unsafe Condition: Door mounted escape slides

Effective: Jul 21, 2004 Category: aircraft

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