AD 86-03-04

final rule

Airworthiness Directives; FOKKER B.V. Model F27 Airplanes

AD Number
86-03-04
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Unknown
FR Citation
This information is not available.
Technical illustration of an aircraft electrical generator and wiring assembly
Problem area Electrical system

Applicability

TypeManufacturerModelDetails
aircraft Fokker Services F27 Mark 050 Airworthiness Directives; FOKKER B.V. Model F27 Airplanes
aircraft Fokker Services F27 Mark 100 Airworthiness Directives; FOKKER B.V. Model F27 Airplanes
aircraft Fokker Services F27 Mark 200 Airworthiness Directives; FOKKER B.V. Model F27 Airplanes
aircraft Fokker Services F27 Mark 300 Airworthiness Directives; FOKKER B.V. Model F27 Airplanes
aircraft Fokker Services F27 Mark 400 Airworthiness Directives; FOKKER B.V. Model F27 Airplanes
aircraft Fokker Services F27 Mark 500 Airworthiness Directives; FOKKER B.V. Model F27 Airplanes
aircraft Fokker Services F27 Mark 600 Airworthiness Directives; FOKKER B.V. Model F27 Airplanes
aircraft Fokker Services F27 Mark 700 Airworthiness Directives; FOKKER B.V. Model F27 Airplanes

Unsafe Condition

Unselected flap extension due to failure of the flap down limit switch causing improper prestall warning power supply wiring.

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

Required Actions

Isolate the prestall warning power supply wires from the flap down limit switch per Fokker Service Bulletin F27/34-52. Alternate means of compliance may be used if approved by the FAA Manager, Standardization Branch.

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

Compliance Time

within 60 days after the effective date of this AD

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

Affected Aircraft

FOKKER B.V. Model F27 Mark 050, 100, 200, 300, 400, 500, 600, serial numbers 10102 to 10642 inclusive, and 10644.

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

Federal Register Abstract

Flap Down Limit Switch

Applicability Source Text

Show captured applicability text from the source AD
AD Final Rules - DRS_86-03-04.html
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AD Number:
86-03-04
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; FOKKER B.V. Model F27 Airplanes
Subject:
Flap Down Limit Switch
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
02/28/1986
Make:
Fokker Services
Model:
F27 Mark 050 | F27 Mark 100 | F27 Mark 200 | F27 Mark 300 | F27 Mark 400 | F27 Mark 500 | F27 Mark 6...Show more
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: 86-03-04
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-5220

AD NUMBER:   86-03-04

SUBJECT HEADING:   Airworthiness Directives; FOKKER B.V. Model F27 Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective February 28, 1986.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:   86-03-04 FOKKER B.V.: Amendment 39-5220. Applies to Model F27 airplanes, certificated in any category, serial numbers 10102 to 10642 inclusive, and 10644. Compliance required within 60 days after the effective date of this AD, unless already accomplished:

A. To prevent unselected flap extension, isolate the prestall warning power supply wires from the flap down limit switch in accordance with Fokker Service Bulletin F27/34-52, dated March 23, 1983.

B. Alternate means of compliance which provide an acceptable level of safety may be used when approved by the Manager, Standardization Branch, ANM-113, FAA, Northwest Mountain Region.

C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of inspections and/or modifications required by this AD.

All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to the Manager, Maintenance and Engineering, Fokker B.V., Product Support, P.O. Box 7600, 11172J Schiphol Oost, The Netherlands. These documents may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or the Seattle Aircraft Certification Office, 9010 East Marginal Way South, Seattle, Washington.

This amendment becomes effective February 28, 1986.

FOOTER:

Document Text

Show stored source text (verify against official source)
AD Final Rules - DRS_86-03-04.html
Copy URL
Print/Save as PDF
Document Versions
 Feedback
Details
AD Number:
86-03-04
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; FOKKER B.V. Model F27 Airplanes
Subject:
Flap Down Limit Switch
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
02/28/1986
Make:
Fokker Services
Model:
F27 Mark 050 | F27 Mark 100 | F27 Mark 200 | F27 Mark 300 | F27 Mark 400 | F27 Mark 500 | F27 Mark 6...Show more
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: 86-03-04
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-5220

AD NUMBER:   86-03-04

SUBJECT HEADING:   Airworthiness Directives; FOKKER B.V. Model F27 Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective February 28, 1986.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:   86-03-04 FOKKER B.V.: Amendment 39-5220. Applies to Model F27 airplanes, certificated in any category, serial numbers 10102 to 10642 inclusive, and 10644. Compliance required within 60 days after the effective date of this AD, unless already accomplished:

A. To prevent unselected flap extension, isolate the prestall warning power supply wires from the flap down limit switch in accordance with Fokker Service Bulletin F27/34-52, dated March 23, 1983.

B. Alternate means of compliance which provide an acceptable level of safety may be used when approved by the Manager, Standardization Branch, ANM-113, FAA, Northwest Mountain Region.

C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of inspections and/or modifications required by this AD.

All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to the Manager, Maintenance and Engineering, Fokker B.V., Product Support, P.O. Box 7600, 11172J Schiphol Oost, The Netherlands. These documents may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or the Seattle Aircraft Certification Office, 9010 East Marginal Way South, Seattle, Washington.

This amendment becomes effective February 28, 1986.

FOOTER:

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.