AD Amdt-39-11271

Recurring final rule
Data completeness: 70%

Airworthiness Directives; Boeing Model 727 Series Airplanes

AD Number
Amdt-39-11271
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. 97-NM-03-AD
FR Citation
64 FR 47377

Applicability

TypeManufacturerModelDetails
aircraft Boeing 727 Airworthiness Directives; Boeing Model 727 Series Airplanes

Unsafe Condition

Fatigue cracks in the vertical beam web and forward flange of the aft pressure bulkhead could result in the inability of the vertical beam to withstand fail-safe loads, leading to loss of cabin pressurization.

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

Required Actions

Inspect the forward flange of the vertical beam of the aft pressure bulkhead at specified buttock lines for cracks. Install a splice repair if cracks are detected. Install a preventative modification on the vertical beam of the door frame in certain cases.

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

Compliance Time

Within 50 flight hours after the effective date of the AD.

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

Affected Aircraft

All Boeing Model 727 series airplanes.

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

Source: Official FAA Source ↗

Retrieved: Apr 6, 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 Boeing 727

Related Airworthiness Directives

2011-12-05 Recurring

final rule

Airworthiness Directives; The Boeing Company Model 727, 727C, 727-100, 727-100C, 727-200, and 727-200F Series Airplanes

Unsafe Condition: could result in fuel tank explosions and consequent loss of the airplane.

Effective: Jul 15, 2011 Category: aircraft

2011-02-05

final rule

Airworthiness Directives; The Boeing Company Model 727 Airplanes

Unsafe Condition: We are adopting a new airworthiness directive (AD) for the products listed above. This AD requires inspections for scribe lines in the fuselage skin at skin lap joints and butt joints, the skin at ...

Effective: Mar 1, 2011 Category: aircraft

2011-01-05 Recurring

final rule

Airworthiness Directives; The Boeing Company Model 727, 727C, 727-100, 727-100C, 727-200, and 727-200F Series Airplanes

Unsafe Condition: which could adversely affect the structural integrity of the airplane, resulting in difficulty maintaining cabin pressurization or rapid decompression of the airplane.

Effective: Feb 14, 2011 Category: aircraft

Amdt-39-16121 Recurring

final rule

Airworthiness Directives; The Boeing Company Model 727 Airplanes

Unsafe Condition: could result in a fuel tank explosion and consequent loss of the airplane.

Effective: Dec 30, 2009 Category: aircraft

View all Boeing ADs →