AD 90-17-15

Final rule

90-17-15 WYTWORNIA SPRZETU Komunikacyjnego PZL-MIELEC: Amendment 39-6678. Docket No. 90-CE-26-AD.

Applicability: Model M18 (Dromader) (Serial Numbers 1Z001-01 through 1Z021-30) airplanes certificated in any category.

Compliance: Required as indicated in the body of the AD, unless already accomplished.

To prevent failure of the vertical fin and rib in the area of the upper rudder attachment, accomplish the following:

(a) Within the next 50 hours time-in-service (TIS) after the effective date of this AD, remove the bolts attaching the fin to the rudder and visually inspect the vertical fin and rib in the area of the upper rudder attachment area for cracks or damage in accordance with the instructions in PZL-Mielec Mandatory Engineering Bulletin (MEB) No. K/02.135/89, dated December 29, 1989.

(1) If cracks or damage are found in the vertical fin and rib from the spar to the rear wall, prior to further flight repair the damaged area and reinforce the vertical fin and rib in accordance with the above MEB.

(2) If no cracks or damage are found, return the aircraft to service and within the next 500 hours TIS reinforce the vertical fin and rib in accordance with the above MEB.

(b) The airplane may be flown in accordance with FAR 21.197 to a location where this AD may be accomplished.

(c) An alternate method of compliance or adjustment of the initial or repetitive compliance times which provides an equivalent level of safety, may be approved by the Manager, Brussels Aircraft Certification Office, FAA, Europe, Africa, and Middle East Office, c/o American Embassy, 1000 Brussels, Belgium; Telephone 513.38.30 extension 2710/2711.

NOTE: The request should be forwarded through an FAA Maintenance Inspector, who may add comments and then send it to the Manager, Brussels Aircraft Certification Office.

All persons affected by this directive may obtain copies of the document(s) referred to herein upon request to WytworniaSprzetu Komunikacyjnego PZL-Mielec 39-301 Mielec, Poland; or may examine these documents at the FAA, Central Region, Office of the Assistant Chief Counsel, Room 1558, 601 East 12th Street, Kansas City, Missouri 64106.

This amendment (39-6678, AD 90-17-15) becomes effective on September 17, 1990.