AD 98-12-35

final rule
Data completeness: 70%

Airworthiness Directives; Fokker Model F27 Mark 100, 200, 300, 400, 500, 600, and 700 Series Airplanes

AD Number
98-12-35
Status
final_rule
Effective Date
Product Category
aircraft
Docket
98-NM-98-AD
FR Citation
Federal Register: June 15, 1998 (Volume 63, Number 114)

Applicability

TypeManufacturerModelDetails
aircraft Fokker Services F27 Mark 100 Airworthiness Directives; Fokker Model F27 Mark 100, 200, 300, 400, 500, 600, and 700 Series Airplanes
aircraft Fokker Services F27 Mark 200 Airworthiness Directives; Fokker Model F27 Mark 100, 200, 300, 400, 500, 600, and 700 Series Airplanes
aircraft Fokker Services F27 Mark 300 Airworthiness Directives; Fokker Model F27 Mark 100, 200, 300, 400, 500, 600, and 700 Series Airplanes
aircraft Fokker Services F27 Mark 400 Airworthiness Directives; Fokker Model F27 Mark 100, 200, 300, 400, 500, 600, and 700 Series Airplanes
aircraft Fokker Services F27 Mark 500 Airworthiness Directives; Fokker Model F27 Mark 100, 200, 300, 400, 500, 600, and 700 Series Airplanes
aircraft Fokker Services F27 Mark 600 Airworthiness Directives; Fokker Model F27 Mark 100, 200, 300, 400, 500, 600, and 700 Series Airplanes
aircraft Fokker Services F27 Mark 700 Airworthiness Directives; Fokker Model F27 Mark 100, 200, 300, 400, 500, 600, and 700 Series Airplanes

Unsafe Condition

Loss of dampening of the MLG actuating ram, which could result in failure of the MLG lockstruts and consequent structural damage to the airplane.

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

Required Actions

Replace the actuating ram bobbin, O-ring seals, and back-up O-ring seals of the MLG with new bobbins and improved O-ring seals in accordance with Fokker Service Bulletin F27/32-168. No person shall install unmodified Dunlop Main Undercarriage Rams with specified part numbers.

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

Compliance Time

Within 4,000 flight hours or 2 years after the effective date of this AD, whichever occurs first.

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

Affected Aircraft

Fokker Model F27 Mark 100, 200, 300, 400, 500, 600, and 700 series airplanes equipped with Dunlop main landing gear (MLG) actuating rams having part numbers AC67132, AC67134, AC67848, or AC67850.

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

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 Fokker Services F27 Mark 100

Related Airworthiness Directives

99-19-19

final rule

Airworthiness Directives; Fokker Model F27 Mark 100, 200, 300, 400, 500, 600, and 700 series airplanes and Model F27 Mark 050 Series Airplanes

Unsafe Condition: AFM - Limitation Section - Ice Protection Sys.

Effective: Dec 27, 1999 Category: aircraft

98-21-02

final rule

Airworthiness Directives; Fokker Model F27 Mark 050, 100, 200, 300, 400, 500, 600, and 700 Rough Field Version (RFV) Series Airplanes

Unsafe Condition: MLG Sliding Member

Effective: Nov 10, 1998 Category: aircraft

98-14-15

final rule

Airworthiness Directives; Fokker Model F27 Mark 100, 200, 300, 400, 500, 600, and 700 Series Airplanes, and Model F27 Mark 050 Series Airplanes

Unsafe Condition: AFM - Power Lever Position

Effective: Aug 11, 1998 Category: aircraft

98-13-19

final rule

Airworthiness Directives; Fokker Model F27 Mark 100, 200, 300, 400, 500, 600, and 700 Series Airplanes

Unsafe Condition: Fuel Feed Lines In Engine Nacelles Inspection

Effective: Jul 30, 1998 Category: aircraft

View all Fokker Services ADs →