STC SA5820NM

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA5820NM This certificate issued to: Horizon Instruments, Inc.

600 S. Jefferson St., Unit C Placentia, CA 92870 Part 3 of the Civil Sir Pegulalions, including Amendment 3-12 and Part 23, Amendment 23-41 of the Federal Aviation Original Product Type Certificate Number: 3A12 Make: Cessna Aircraft Corp.

Model: 172, 172A, 172B, 172C, 172D, 172E, 172F, 172G, *see continuation sheet for additional models Description of Type Design Change: Installation of an Engine Electronic Digital Tachometer, Horizon Model P-1000, P/N P100055- (Applicability table on continuation sheet) in Cessna Aircraft Corp. 172 Series aircraft, in accordance with Horizon Instruments, Inc. Master Drawing List No. P100055, Rev.

N/C, dated March 12, 1992, and/or later FAA approved revision. Horizon Airplane Flight Manual Supplement No. 1, Rev. N/C, August 12, 1992, or later approved revision is required.

Limitations and Conditions: . The installation should not be incorporated in any aircraft unless it is determined that the interrelationship between this installation and any previously approved configuration The approval of this modification applies to the above noted airplane model series only. A copy of this STC must be included in the permanent records of the modified aircraft. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

The FAA will reissue the certificate in the name of the transferee and forward it to him.

TRANSFER ENDORSEMENT Transfer the ownership of the Supplemental Type Certificate Number to (Name of transferee)_ (Address of transfer) (Number and street) (City, State, and Zip code) from (Name of grantor) (Print or type)_ (Address of grantor) (Number and street) (City, State, and Zip code) Extent of Authority (if licensing agreement):

Date of Transfer:_ Signature of grantor (In ink):

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA5820NM *Models continued: 172H, 1721, 172K, 172L, 172M, 172N, 172P, 172Q, 172R, 172S, FP172 Applicability Table Aircraft Model Serial Number Range Horizon Tachometer Part Number 172 610, 612, 615, 28000-29999, 36000-36999, P100055-140 46001-46754 172A 622, 625, 46755-47746 P100055-140 172B 630, 17247747-17248734 P100055-140 or P100055-146 172C 17248735-17249544 P100055-140 or P100055-146 172D 17249545-17250572 P100055-140 or P100055-146 172E 639, 17250573-17251822 P100055-146 172F 17251823-17253392 P100055-146 172G 17253393-17254892 P100055-146 172H 638, 17254893-17256512, EXCL. 17256493 P100055-146 172I 17256513-17257161 P100055-140 or P100055-188 172K 17257162-17258486 P100055-140 or P100055-188 17258487-17259223 172L 17259224-17260758 P100055-188 172M 17256493, 17256493-17267584, EXCL. P100055-188 17261445, 17261578 172N 17261445, 17261578, 17267585-17271034, P100055-847 EXCL. 17270050 172N 17270050, 17271035-17274009 P100055-887 172P 17274010-17276654 P100055-187 172Q 17275869- 17275054, 17276101-17276211 P100055-148 172R Only 172R serial numbers listed in TCDS P100055-148 3A12 Note 4 [Modified by Cessna Modification Kit 172-72-01] 172S 172S8001-UP P100055-131 FP172 FP1720001-FP1720003 P100055-149

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