STC SA5491NM

This Certificate issued to Horizon Instruments, Inc.

600 S. Jefferson St., Unit C Placentia, CA 92870 Part 3 of the Civil Air Regulations. Including Amendment 3-8 Original Product Type Certificate Number :

3A15 aft Corp.

H35, J35, K35 Beech Aircr, M35, N35, P35, S35, V35,V35A, V35B, V35ATC, V35BTC, 35-33, 35-A33, 35-B33, 35-C33, 35-C33A, E33, E33A, F33, F33A, F33C, G33, 36, A36, A36TC, B36TC Description of Type Design Change: Installation of an Engine Electronic Digital Tachometer, Horizon Model P-1000, P/N P100100- (Applicability Table on continuation sheet) in Beech Aircraft Corp. 33, 35, 36 series aircraft, in accordance with Horizon Instruments, Inc. Master Drawing List No. P100100, Rev.

N/C, dated August 28, 1991, and/or later FAA approved revision.

Horizon Airplane Flight Manual Supplement No. 1, Rev. N/C, October 30, 1991, and Horizon Airplane Flight Manual Supplement No. 2, Rev. N/C, January 31, 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 will not introduce any adverse effect upon the airworthiness of the aircraft. 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.

Date of application : April 8, 1991

Date of issuance : November 11, 1991

Date reissued : Jan. 14, 2002; May 15, 2006

Date amended : Feb. 5, 1992; Jan. 6, 1993

( Signature)

Manager, Technical & Administrative Support Staff, Los Angeles Aircraft Certification Office ( Title)

Number SA5491NM

Applicability Table

Aircraft Model Serial Number Range Horizon Tachometer Part Number

35-33 CD1 – CD224, CD233, CD234, CD241, CD246 -250 P100100-102 35A-33 CD225 - CD232, CD235, CD237 - CD240, CD242 - CD245, CD251 - CD387 P100100-102 35-B33 CD388 - CD813 P100100-102 35-C33 CD814 - CD118, Excl CD982 P100100-102 E33 CD1119 - CD1234 P100100-102 F33 CD1235 – CD1236 CD1237 – CD1254 P100100-102 P100100-102, P100100-106 G33 CD1255 – CD1304 P100100-102, P100100-106 35-C33A CE1 – CE179 P100100-106 E33A CE180 -CE289 P100100-106 F33A CE290 – CE349 CE350 – CE408 CE409 – CE890 CE891 – UP P100100-106 P100100-106 P100100-106, P100100-109 P100100-106, P100100-108 E33C CJ1 – CJ25 P100100-106 F33C CJ52 – UP P100100-106, P100100-109 H35 D4866 – D5330, Excl D5062 P100100-100, P100100-116 J35 D5062, D5331 – D5725 P100100-100 K35 D5726 – D6161 P100100-100 M35 D6162 – D6561 P100100-100 N35 D6552 – D6841 P100100-103 P35 D6842 – D7309, Excl D7140 P100100-103 S35 D7140, D7310 – D7976 P100100-106 35-33 CD1 – CD224, CD233, CD234, CD241, CD246 – CD250 P100100-102 35-A33 CD225 –CD232, CD235, CD237 – CD240, CD242 – CD245, CD251 – CD387 P100100-102 35-B33 CD388 – CD813 P100100-102

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Applicability Table

Aircraft Model Serial Number Range Horizon Tachometer Part Number

V35 D7977 – D8598 P100100-106 V35A D8599 – D9068 P100100-106 V35B D9069 – UP P100100-106, P100100-109 36 E1 – E184 P100100-106 A36 E185 – E363 E364 – UP P100100-106 P100100-106, P100100-109 A36TC EA1 – EA272 P100100-106 B36TC EA272 – UP P100100-106

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