AD 88-26-03

final rule

Airworthiness Directives; BELL HELICOPTER TEXTRON, INC. (BHTI) Model 206L and 206L-1 Helicopters

AD Number
88-26-03
Status
final_rule
Effective Date
Product Category
aircraft
Docket
88-ASW-2
FR Citation
This information is not available.
Technical illustration of an aircraft fuel pump, filter, valve, and lines
Problem area Fuel system

Applicability

TypeManufacturerModelDetails
aircraft Bell Helicopter Textron Canada Limited 206L Airworthiness Directives; BELL HELICOPTER TEXTRON, INC. (BHTI) Model 206L and 206L-1 Helicopters
aircraft Bell Helicopter Textron Canada Limited 206L-1 Airworthiness Directives; BELL HELICOPTER TEXTRON, INC. (BHTI) Model 206L and 206L-1 Helicopters

Unsafe Condition

Fuel system failure due to malfunction of fuel system flow switches P/N 206-063-635-001, 206-064-601-001, -003, -101, or -103, which could result in engine flameout and loss of the helicopter.

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

Required Actions

Remove and replace fuel system flow switches with retrofit kit P/N 206-703-004-101 and relocate in-line fuel filters P/N 206-063-693-001 per Bell Alert Service Bulletin 206L-88-52. Alternate methods may be used if approved by FAA.

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

Compliance Time

Within the next 250 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

Bell Helicopter Textron, Inc. Model 206L (S/N 45001-45153, 46601-46617) and Model 206L-1 (S/N 45154-45840) with specified fuel system flow switches installed.

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

Federal Register Abstract

Fuel System Flow Switches

Applicability Source Text

Show captured applicability text from the source AD
AD Final Rules - DRS_88-26-03.html
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AD Number:
88-26-03
Document Type:
AD Final Rules
Docket Number:
88-ASW-2
Subject Heading:
Airworthiness Directives; BELL HELICOPTER TEXTRON, INC. (BHTI) Model 206L and 206L-1 Helicopters
Subject:
Fuel System Flow Switches
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
01/18/1989
Make:
Bell Helicopter Textron Canada Limited
Model:
206L | 206L-1
Product Type:
Aircraft
Product Subtype:
Rotorcraft
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 88-26-03
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   88-ASW-2

AMENDMENT:   39-6058

AD NUMBER:   88-26-03

SUBJECT HEADING:   Airworthiness Directives; BELL HELICOPTER TEXTRON, INC. (BHTI) Model 206L and 206L-1 Helicopters


ACTION:  

SUMMARY:  

DATES:   Effective January 18, 1989.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
88-26-03 BELL HELICOPTER TEXTRON, INC. (BHTI): Amendment 39-6058.

Applies to Model 206L helicopters, S/N's 45001 through 45153 and S/N's 46601 through 46617, and to Bell Model 206L-1 helicopters, S/N's 45154 through 45840, certificated in any category, with fuel system flow switches, P/N's 206-063-635-001, 206-064-601-001, -003, -101, or -103 installed. (Airworthiness Docket No. 88-ASW-2)

Compliance is required as indicated, unless already accomplished.

To prevent a possible fuel system failure due to the malfunction of the fuel system flow switches which could result in an engine flameout and subsequent loss of the helicopter accomplish the following:

(a) Within the next 250 hours' time in service after the effective date of this AD, remove and replace the fuel system flow switches, P/N's 206-063-635-001, 206-064-601-001, - 003, -101, or -103, whichever is installed, with fuel system flow switch retrofit kit, P/N 206-703- 004-101 and relocate the in-line fuel filters, P/N 206-063-693-001, in accordance with Bell Helicopter Textron, Inc., Alert Service Bulletin No. 206L-88-52, dated June 10, 1988.

(b) An alternate method of compliance which provides an equivalent level of safety with this AD may be used when approved by the Manager, Helicopter Certification Branch, Federal Aviation Administration, Fort Worth, Texas 76193-0170.

The procedure shall be done in accordance with Bell Helicopter Textron, Inc., Alert Service Bulletin No. 206L-88-52, dated June 10, 1988. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a)(1) and 1 CFR Part 51. Copies may be obtained from Bell Helicopter Textron, Inc., P.O. Box 482, Fort Worth, Texas 76101, Attention: Customer Support. Copies may be inspected at the Office of the Regional Counsel, FAA, Southwest Region, 4400 Blue Mound Road, Fort Worth, Texas, or at the Office of the Federal Register, 1100 L Street, NW., Room 8401, Washington, D.C.

This amendment (39-6058, AD 88-26-03) becomes effective January 18, 1989.

FOOTER:

Document Text

Show stored source text (verify against official source)
AD Final Rules - DRS_88-26-03.html
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Details
AD Number:
88-26-03
Document Type:
AD Final Rules
Docket Number:
88-ASW-2
Subject Heading:
Airworthiness Directives; BELL HELICOPTER TEXTRON, INC. (BHTI) Model 206L and 206L-1 Helicopters
Subject:
Fuel System Flow Switches
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
01/18/1989
Make:
Bell Helicopter Textron Canada Limited
Model:
206L | 206L-1
Product Type:
Aircraft
Product Subtype:
Rotorcraft
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 88-26-03
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   88-ASW-2

AMENDMENT:   39-6058

AD NUMBER:   88-26-03

SUBJECT HEADING:   Airworthiness Directives; BELL HELICOPTER TEXTRON, INC. (BHTI) Model 206L and 206L-1 Helicopters


ACTION:  

SUMMARY:  

DATES:   Effective January 18, 1989.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
88-26-03 BELL HELICOPTER TEXTRON, INC. (BHTI): Amendment 39-6058.

Applies to Model 206L helicopters, S/N's 45001 through 45153 and S/N's 46601 through 46617, and to Bell Model 206L-1 helicopters, S/N's 45154 through 45840, certificated in any category, with fuel system flow switches, P/N's 206-063-635-001, 206-064-601-001, -003, -101, or -103 installed. (Airworthiness Docket No. 88-ASW-2)

Compliance is required as indicated, unless already accomplished.

To prevent a possible fuel system failure due to the malfunction of the fuel system flow switches which could result in an engine flameout and subsequent loss of the helicopter accomplish the following:

(a) Within the next 250 hours' time in service after the effective date of this AD, remove and replace the fuel system flow switches, P/N's 206-063-635-001, 206-064-601-001, - 003, -101, or -103, whichever is installed, with fuel system flow switch retrofit kit, P/N 206-703- 004-101 and relocate the in-line fuel filters, P/N 206-063-693-001, in accordance with Bell Helicopter Textron, Inc., Alert Service Bulletin No. 206L-88-52, dated June 10, 1988.

(b) An alternate method of compliance which provides an equivalent level of safety with this AD may be used when approved by the Manager, Helicopter Certification Branch, Federal Aviation Administration, Fort Worth, Texas 76193-0170.

The procedure shall be done in accordance with Bell Helicopter Textron, Inc., Alert Service Bulletin No. 206L-88-52, dated June 10, 1988. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a)(1) and 1 CFR Part 51. Copies may be obtained from Bell Helicopter Textron, Inc., P.O. Box 482, Fort Worth, Texas 76101, Attention: Customer Support. Copies may be inspected at the Office of the Regional Counsel, FAA, Southwest Region, 4400 Blue Mound Road, Fort Worth, Texas, or at the Office of the Federal Register, 1100 L Street, NW., Room 8401, Washington, D.C.

This amendment (39-6058, AD 88-26-03) becomes effective January 18, 1989.

FOOTER:

Source: Official FAA Source ↗

Retrieved: Apr 8, 2026

Rights: U.S. Government Public Domain

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