AD 89-23-16

89-23-16 CASA: Amendment 39-6391. Docket No. 89-NM-122-AD.

Applicability: All Model C-212 series airplanes, certificated in any category.

Compliance: Required within 60 days after the effective date of this AD, unless previously accomplished.

To prevent, following an engine failure on takeoff, damage to or failure of the remaining engine caused by overtorquing, accomplish the following:

A. Modify the Automatic Power Reserve (APR) system in accordance with CASA Service Bulletin 212-72-05, Revision 1, dated June 1, 1989.

B. Upon accomplishment of the modification required by paragraph A., above, revise the FAA-approved Airplane Flight Manual to include the appropriate revision, which provides new procedures for setting power, as specified in Paragraph 1.B. of CASA Service Bulletin 212-72-05, Revision 1, dated June 1, 1989.

C. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be usedwhen 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 Construcciones Aeronauticas, S.A. (CASA), Getafe, Madrid, Spain. 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.

This amendment (39-6391, AD 89-23-16) becomes effective on December12, 1989.