AD 77-14-12

final rule

Airworthiness Directives; BRITISH AIRCRAFT CORPORATION Model BAC 1-11, 200 and 400 Series Airplanes

AD Number
77-14-12
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Unknown
FR Citation
This information is not available.

Applicability

TypeManufacturerModelDetails
aircraft Airbus SAS BAC 1-11 200 Series Airworthiness Directives; BRITISH AIRCRAFT CORPORATION Model BAC 1-11, 200 and 400 Series Airplanes
aircraft Airbus SAS BAC 1-11 400 Series Airworthiness Directives; BRITISH AIRCRAFT CORPORATION Model BAC 1-11, 200 and 400 Series Airplanes

Unsafe Condition

Leaks in the ring main ducts of the passenger oxygen system due to chafing or insufficient clearance with adjacent structure less than 0.050 inches.

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

Required Actions

Inspect passenger oxygen ring main ducts per BAC Alert Service Bulletin 35-A-PM 5124. Address chafing or insufficient clearance by complying with specified provisions of the bulletin. Install an FAA-approved placard if system restrictions occur.

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

Compliance Time

within the next 500 hours time in service after the effective date of this AD

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

Affected Aircraft

British Aircraft Corporation Model BAC 1-11, 200 and 400 series airplanes, certificated in all categories

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

Federal Register Abstract

Passenger Oxygen System

Applicability Source Text

Show captured applicability text from the source AD
AD Final Rules - DRS_77-14-12.html
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Details
AD Number:
77-14-12
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; BRITISH AIRCRAFT CORPORATION Model BAC 1-11, 200 and 400 Series Airplanes
Subject:
Passenger Oxygen System
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
08/15/1977
Make:
Airbus SAS
Model:
BAC 1-11 200 Series | BAC 1-11 400 Series
Product Type:
Aircraft
Product Subtype:
Large Airplane
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 77-14-12
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-2967

AD NUMBER:   77-14-12

SUBJECT HEADING:   Airworthiness Directives; BRITISH AIRCRAFT CORPORATION Model BAC 1-11, 200 and 400 Series Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective August 15, 1977.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
77-14-12 BRITISH AIRCRAFT CORPORATION: Amendment 39-2967. Applies to Model BAC 1-11, 200 and 400 series airplanes, certificated in all categories.

Compliance is required within the next 500 hours time in service after the effective date of this AD, unless already accomplished.

To prevent possible leaks in the ring main ducts of the passenger oxygen system, accomplish the following:

(a) Gain access to and conduct a one-time inspection of the passenger oxygen ring main ducts in accordance with paragraph 2.1.1. of the "Accomplishment Instructions" of British Aircraft Corporation Alert Service Bulletin 35-A-PM 5124, Issue No. 1, dated February 12, 1973, or an FAA-approved equivalent.

(b) If during the inspection required by paragraph (a) of this AD, chafing of any of the oxygen ducts is found or the clearance with adjacent structure is less than 0.050 inches, comply with the applicable provisions specified in paragraph 2.1.2, 2.1.3, 2.1.4, or 2.1.5 of BAC Alert Service Bulletin 35-A-PM 5124, dated February 12, 1973, or an FAA-approved equivalent.

(c) If, as a result of any of the actions required by paragraph (b) of this AD, the use of the passenger oxygen system is restricted, install an FAA-approved placard in full view of the pilot which defines the restriction and states that flight operations must be limited to those allowed by the applicable operating rules for the particular airplane.

This amendment becomes effective August 15, 1977.

FOOTER:

Document Text

Show stored source text (verify against official source)
AD Final Rules - DRS_77-14-12.html
Copy URL
Print/Save as PDF
Document Versions
 Feedback
Details
AD Number:
77-14-12
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; BRITISH AIRCRAFT CORPORATION Model BAC 1-11, 200 and 400 Series Airplanes
Subject:
Passenger Oxygen System
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
08/15/1977
Make:
Airbus SAS
Model:
BAC 1-11 200 Series | BAC 1-11 400 Series
Product Type:
Aircraft
Product Subtype:
Large Airplane
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 77-14-12
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-2967

AD NUMBER:   77-14-12

SUBJECT HEADING:   Airworthiness Directives; BRITISH AIRCRAFT CORPORATION Model BAC 1-11, 200 and 400 Series Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective August 15, 1977.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
77-14-12 BRITISH AIRCRAFT CORPORATION: Amendment 39-2967. Applies to Model BAC 1-11, 200 and 400 series airplanes, certificated in all categories.

Compliance is required within the next 500 hours time in service after the effective date of this AD, unless already accomplished.

To prevent possible leaks in the ring main ducts of the passenger oxygen system, accomplish the following:

(a) Gain access to and conduct a one-time inspection of the passenger oxygen ring main ducts in accordance with paragraph 2.1.1. of the "Accomplishment Instructions" of British Aircraft Corporation Alert Service Bulletin 35-A-PM 5124, Issue No. 1, dated February 12, 1973, or an FAA-approved equivalent.

(b) If during the inspection required by paragraph (a) of this AD, chafing of any of the oxygen ducts is found or the clearance with adjacent structure is less than 0.050 inches, comply with the applicable provisions specified in paragraph 2.1.2, 2.1.3, 2.1.4, or 2.1.5 of BAC Alert Service Bulletin 35-A-PM 5124, dated February 12, 1973, or an FAA-approved equivalent.

(c) If, as a result of any of the actions required by paragraph (b) of this AD, the use of the passenger oxygen system is restricted, install an FAA-approved placard in full view of the pilot which defines the restriction and states that flight operations must be limited to those allowed by the applicable operating rules for the particular airplane.

This amendment becomes effective August 15, 1977.

FOOTER:

Source: Official FAA Source ↗

Retrieved: Apr 8, 2026

Rights: U.S. Government Public Domain

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