87-16-07 (HONEYWELL, INC., SPERRY COMMERCIAL FLIGHT SYSTEMS DIVISION (formerly Sperry Corporation, Aerospace and Marine Group): Amendment 39-5696. Applies to all digital and analog Electronic Flight Instrument Systems (EFIS) Models EDZ 601, 603, 801, 803, 611, and 811 installations, which include a multifunction display symbol generator.
Compliance required within 30 days after the effective date of this AD, unless previously accomplished.
To eliminate erroneous display of the angle of attack fast/slow presentation, accomplish the following:
A. For the analog type EFIS equipment: Exchange Multifunction Display Symbol Generator (MG) P/N's 7007061-603, -803, -601, -801, and 901 with the same part numbers which have Modification (Mod) K or subsequent incorporated; accomplish this in accordance with Paragraph 2, "Accomplishment Instructions of Honeywell Service Bulletin 21-1986-200, dated January 20, 1987.
B. For the digital type EFIS equipment: Exchange MG P/N's7007321-811 and -611 with the same part numbers which have Modification (Mod) L or subsequent incorporated; accomplish this in accordance with Paragraph 2, "Accomplishment Instructions" of Honeywell Service Bulletin 21-1987-06, dated May 15, 1987.
C. Alternate means of compliance which provide an acceptable level of safety may be used when approved by the Manager, Western Aircraft Certification Office, FAA, Northwest Mountain Region.
D. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to ferry aircraft to a maintenance 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 the Honeywell Inc., Sperry Commercial Flight System Division, P.O. Box 29000, Phoenix, Arizona 85038-9000. These documents may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or at Western Aircraft Certification Office, 15000 Aviation Boulevard, Hawthorne, California.
This Amendment becomes effective August 20, 1987.