AD 90-14-09

Final rule

90-14-09 SHORT BROTHERS: Amendment 39-6649. Docket No. 90-NM-128-AD.
Applicability: Model SD3-60 series airplanes, Serial Numbers SH3601 through SH3642, inclusive, certificated in any category.

Compliance: Required as indicated, unless previously accomplished.

To prevent reduced structural integrity of the wings, accomplish the following:

A. Upon the accumulation of 9,600 hours time-in-service or within 30 days after the effective date of this AD, whichever occurs later, and thereafter at intervals not to exceed 600 hours time-in-service, perform the following inspections:

1. For airplanes with Serial Numbers SH360l through SH3635, inclusive: Perform a visual inspection of the left and right outerwing/strut attachment fittings in accordance with Short Brothers Service Bulletin SD360-57-12, dated June 8, 1990.

2. For airplanes with Serial Numbers SH3601 through SH3642, inclusive: Perform a visual inspection of the left and right stub wing/strut attachment fittings in accordance with Short Brothers Service Bulletin SD360-57-12, dated June 8, 1990.

B. If cracks are found, prior to further flight, repair or replace with serviceable part in a manner approved by the Manager, Standardization Branch, ANM-113, FAA, Transport Airplane Directorate.

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, Transport Airplane Directorate.

NOTE: The request should be submitted directly to the Manager, Standardization Branch, ANM-113, and a copy sent to the cognizant FAA Principal Inspector (PI). The PI will then forward comments or concurrence 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 affectedby this directive who have not already received the appropriate service information from the manufacturer may obtain copies upon request to Short Brothers, PLC, Service Representative, 2011 Crystal Drive, Suite 713, Arlington, Virginia 22202-3702. This information 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.

This amendment (39-6649, AD 90-14-09) becomes effective on July 23, 1990.