AD 85-23-07

85-23-07 KING RADIO CORPORATION: Amendment 39-5217. Applies to Models KFC 150, KAP 150 and KAP 100 autopilot systems which use the following flight computers and are certificated to the applicable requirements of Technical Standard Orders C9c and C52a (*):

MODEL PART NO. SERIAL NO. KC 190 065-0055-00 all serial numbers

065-0055-01 all serial numbers

065-0055-02 1474 and below

065-0055-03 10095 and below KC 191 065-0054-00 all serial numbers

065-0054-01 all serial numbers

065-0054-02 20754 and below

065-0054-03 30227 and below

065-0054-04 20754 and below

065-0054-05 30227 and below KC 192 065-0042-00 all serial numbers

065-0042-01 all serial numbers

065-0042-02 40614 and below

065-0042-03 50464 and below

065-0042-04 40614 and below

065-0042-05 50464 and below

(*) Units with serial numbers above those stated comply with this AD at the time of shipment from King Radio Corporation.

Compliance: Required as indicated unless already accomplished.

To prevent undetected trim malfunctions that may result in significant mistrim conditions, accomplish the following:

(a) For affected flight computers not installed in an aircraft, prior to further use, modify the computer in accordance with the instructions contained in King Radio Corporation Alert Service Bulletin KC 190/191/192-9 dated November 6, 1985.

(b) For affected flight computers installed in the following airplanes:

AIRCRAFT MAKE AND MODEL STC NUMBER

Mooney M20J, M20K SA1561CE-D Piper PA-28RT-201, PA-28RT-201T SA1563CE-D Piper PA-28-161, PA-28-181, PA-28-236 SA1565CE-D Piper PA-32-301, PA-32-301T SA1567CE-D Cessna 172RG SA1568CE-D Cessna U206G, TU206G (Landplane,

Seaplane, and Amphibian) SA1569CE-D Cessna 172P SA1570CE-D Cessna R182, TR182 SA1571CE-D Piper PA-32R-301, PA-32R-301T SA1572CE-D Beech A36, A36TC, B36TC SA1574CE-D Piper PA-34-200T, PA-34-220T SA1575CE-D Cessna 182P, 182Q, 182R, T182 SA1770CE-D Cessna 172L S/N 17256631 SA1772CE-D Piper PA-46-310P SA1778CE-D Reims-Cessna FR182 SA1783CE-D Partenavia AP68TP 300 SA1784CE-D SOCATA TB20 SA1785CE-D Beech F33A SA1789CE-D Partenavia P68C, P68C-TC SA1791CE-D Reims-Cessna F182P, F182Q SA1794CE-D Cessna 210R, T210R SA2050CE-D

(1) Within the next 10 hours time-in-service (TIS) after the effective date of this AD, deactivate the autopilot and electric trim by pulling the respective circuit breakers and banding by placing a tie wrap equivalent around the circuit breaker stem.

(2) Fabricate and install on the instrument panel in clear view of the pilot the following placard using letters of a minimum 0.10 inch in height: "AP AND ELECTRIC TRIM INOPERATIVE PER AD 85-23-07" and operate the aircraft accordingly.

(3) Within 50 hours TIS or 120 calendar days, whichever comes first, after the effective date of this AD, modify the flight computer in accordance with the instructions contained in King Radio Corporation Alert Service Bulletin KC 190/191/192-9 dated November 6, 1985.

(4) The requirements of paragraphs (b)(1) and (b)(2) of this AD may be accomplished by the holder of a pilot certificate issued under Part 61 of the Federal Aviation Regulations (FARs) on any airplane owned or operated by him. The person accomplishing these actions must make the appropriate aircraft maintenance record entry as prescribed by FAR 91.173.

(5) The requirements of paragraphs (b)(1) and (b)(2) of this AD are no longer required when paragraph (b)(3) of this AD has been accomplished.

(c) For affected flight computers installed in the following airplanes:

AIRCRAFT MAKE AND MODEL STC NUMBER Piper PA-60-700P SA1777CE-D (1) Within the next 10 hours TIS after the effective date of this AD, deactivate the autopilot by pulling the respective circuit breaker and banding open by placing a tie wrap or equivalent around the circuit breaker stem.(2) Fabricate and install on the instrument panel in clear view of the pilot the following placard using letters of a minimum 0.10 inch in height: "AP INOPERATIVE PER AD 85-23-07", and operate the aircraft accordingly.

(3) Within 50 hours TIS or 120 calendar days, whichever comes first, following the effective date of this AD, modify the flight computer in accordance with the instructions contained in King Radio Corporation Alert Service Bulletin KC190/191/192-9 dated November 6, 1985.

(4) The requirements of paragraphs (c)(1) and (c)(2) of this AD may be accomplished by the holder of a pilot certificate issued under Part 61 of the Federal Aviation Regulations (FARs) on any airplane owned or operated by him. The person accomplishing these actions must make the appropriate aircraft maintenance record entry as prescribed by FAR 91.173.

(5) The requirements of paragraphs (c)(1) and (c)(2) of this AD are no longer required when paragraph (c)(3) of this AD has been accomplished.

(d) The modification requirements of paragraphs (b)(3) and (c)(3) of this AD must be accomplished by an appropriate FAA certified radio repair station.

(e) Aircraft may be flown in accordance with Federal Aviation Regulation 21.197 to a location where this AD can be accomplished.

(f) An equivalent method of compliance with this AD, if used, must be approved by the Manager, Wichita Aircraft Certification Office, 1801 Airport Road, Room 100, Mid-Continent Airport, Wichita, Kansas 67209.

All persons affected by this directive may obtain copies of the documents referred to herein upon request to King Radio Corporation, 400 North Rogers Road, Olathe, Kansas 66062, or the FAA, Rules Docket, Office of the Regional Counsel, Room 1558, 601 East 12th Street, Kansas City, Missouri 64106.

This amendment becomes effective January 27, 1986, as to all persons except those persons to whom it was made immediately effective by priority letter AD 85-23-07, issued November 20, 1985, which contained this amendment.