| AD Number | 89-04-06 R1 | Status | Active |
| Effective Date | January 03, 1990 | Issue Date | Not specified |
| Docket Number | Unknown | Amendment | 39-6405 |
| Product Type | ["Aircraft"] | Product Subtype | ["Large Airplane"] |
| CFR Part | --- - Part 39 | CFR Section | N/A |
| Citation | This information is not available. | ||
| Manufacturer(s) | Fokker Services |
| Model(s) | F27 Mark 050 F27 Mark 100 F27 Mark 200 F27 Mark 300 F27 Mark 400 F27 Mark 500 F27 Mark 600 F27 Mark 700 |
89-04-06 R1 FOKKER: Amendment 39-6143 as revised by Amendment 39-6405.
Applicability: Model F-27 series airplanes, Serial Numbers 10102 through 10307, 10308 through 10340, and 10342 through 10360, certificated in any category.
Compliance: Required as indicated, unless previously accomplished.
To prevent engine separation and subsequent structural damage to the airplane aft of the engine, accomplish the following:
A. For airplanes listed in Fokker Service Bulletin F27/54-44, dated July 7, 1988: Within 60 days after March 28, 1989 (the effective date of AD 89-04-06, Amendment 39-6143), inspect both the right and left upper nacelle brace struts, in accordance with Fokker Service Bulletin F27/54-44, dated July 7, 1988. If any brace strut is found with a self-tapping screw, prior to the accumulation of 30,000 landings on the strut, or within the next 500 landings from May 27, 1989, whichever occurs later, replace the brace strut in accordance with the referenced service bulletin.
B. For airplanes Serial Numbers 10308 through 10340 and 10342 through 10360: Within 60 days after the effective date of this amendment, inspect both the right and left upper nacelle brace struts, in accordance with Fokker Service Bulletin F27/54-44, Revision 1, dated May 19, 1989. If any brace strut is found with a self-tapping screw, prior to the accumulation of 30,000 landings on the strut, or within the next 500 landings after the effective date of this amendment, whichever occurs later, replace the brace strut in accordance with the referenced service bulletin.
C. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Standardization Branch, ANM-113, FAA, Northwest Mountain Region.
NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector (PMI), who will either concur or comment and then send it to the Manager, Standardization Branch, ANM-113.
D. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of 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 Fokker Aircraft USA, Inc., 1199 N. Fairfax Street, Alexandria, Virginia 22314. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 17900 Pacific Highway South, Seattle, Washington, or the Standardization Branch, 9010 East Marginal Way South, Seattle, Washington.
The AD revises Amendment 39-6143, AD 89-04-06, which became effective on March 28, 1989.
This amendment (39-6405, AD 89-04-06 R1) becomes effective on January 3, 1990.