AD 87-11-10

87-11-10 MCDONNELL DOUGLAS: Amendment 39-5633. Applies to McDonnell Douglas Model DC-10-10, -10F, -15, -30, -30F, -40 and KC-10A (Military) series airplanes, certificated in any category. Compliance required as indicated unless previously accomplished.

To prevent pylon separation due to broken pylon aft clevis fitting attach bolts, accomplish the following:

A. Within 30 days after the effective date of this AD, and thereafter at intervals not to exceed 180 days, accomplish the following:

1. Inspect the pylon aft clevis fitting attach bolts in accordance with the Accomplishment Instructions in McDonnell Douglas Service Bulletin A57-106, dated March 23, 1987, or later FAA-approved revision.

2. If broken bolts are found, before further flight replace all four bolts with new bolts in accordance with the Accomplishment Instructions in McDonnell Douglas Service Bulletin A57-106, dated March 23, 1987, or later FAA-approved revision.

B. Replacement of all fourof the aft clevis fitting H-11 steel attach bolts in a pylon with stress-corrosion resistant Inconel and/or multi-phase bolts in accordance with the Accomplishment Instructions in McDonnell Douglas Service Bulletin A57-106, dated March 23, 1987, or later FAA-approved revision, constitutes terminating action for the inspections required by paragraph A., above.

C. Alternate means of compliance which provide an acceptable level of safety may be used when approved by the Manager, Los Angeles Aircraft Certification office, FAA, Northwest Mountain Region.

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 information from the manufacturer may obtain copies upon request to McDonnell Douglas Corporation, 3855 Lakewood Boulevard, Long Beach, California 90846, Attention: Director, Publications and Training, C1-750 (54-60). This information may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington or the Los Angeles Aircraft Certification Office, 4344 Donald Douglas Drive, Long Beach, California.

This amendment, 39-5633, becomes effective June 15, 1987.