STC SA1241GL

FAA Form 8110-2 (5/14) Page 1 of

Part of the

Signature

Title McCauley Propeller Systems One Cessna Boulevard Wichita, KS 67277 4 SA1241GL Civil Air Regulations 3 Installation of McCauley Propeller Model 4HFR34C762/94LMA-4. Data required:

1. McCauley Technical Report No. 681, no revision, dated 9/22/87, and McCauley Drawing No. D-60019, revised 8/20/87, or later FAA Approved revision; or (continued on page 3)

1. This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated, unless it is determined by the installer that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft.

(continued on page 3) Beech Aircraft Corporation 65-A90, 65-A90-1, 65-A90-4, B90, C90, C90A, E90 July 19, 2006, August 18, 2017 February 1, 1988, August 1, 1988

March 4, 1987 September 24, 1987 3A20 Hieu Nguyen Program Manager Wichita ACO Branch

FAA Form 8110-2 (5/14) Page 2 of

To (Name and address of transferee) From (Name and address of grantor) Extent of Authority (if licensing agreement):

4 SA1241GL

FAA Form 8110-2 (5/14) Page 3 of

4 Date reissued: July 19, 2006, August 18, 2017 Date amended: February 1, 1988, August 1, 1988

Type Design Change (continued from page 1): OR

Installation of McCauley Propeller Model 4HFR34C763/94LMA-4. Data required:

1. McCauley Technical Report No. 699, no revision, dated 7/29/88, and McCauley Drawing No. D-60029, Change Number 7021, revised 8/1/88, or later FAA Approved revision.

Limitations and Conditions (continued from page 1):

2. Aircraft Propeller eligibility requirements as follows:

A. McCauley Propeller Model 4HFR34C762/94LMA-4: Model C90 with Pratt & Whitney PT6A-20A engine, C90 or C90A with Pratt & Whitney PT6A-21 engine, or E90 with Pratt & Whitney PT6A-28 engine.

B. McCauley Propeller Model 4HFR34C763/94LMA-4: Model 65-A90, s/n LJ-114 thru LJ-317, Model 65-A90-1, s/n LM-1 and On, Model 65-A90-4, s/n LU-1 and On, Model B90, s/n LJ-318 thru LJ-501, Model C90, s/n LJ-502 thru LJ-583, all with Pratt & Whitney PT6A-20 engine.

3. Requirements for Airplane Flight Manual Supplements (AFMS), or later FAA Approved revision, are as follows:

A. McCauley Propeller Model 4HFR34C762/94LMA-4: Technical Report No. 687 for Model C90 with Pratt & Whitney PT6A-20A engine, Technical Report No. 680 for C90 or C90A with Pratt & Whitney PT6A-21 engine, or Technical Report No. 682 for E90 with Pratt & Whitney PT6A-28 engine, all dated 9/24/87.

B. McCauley Propeller Model 4HFR34C763/94LMA-4: Technical Report No. 696 for Models 65-A90 and B90 and Technical Report No. 697 for Model C90, all with Pratt & Whitney PT6A-20 engine and dated 7/29/88.

Models 65-A90-1 and 65-A90-4 are military aircraft and do not have FAA Approved Airplane Flight Manual. Installation of these propellers on the aircraft requires appropriate changes to the Military Operator's Manual, TM-55-1510-XXX-10, based on the approved data of this STC.

(continued on page 4) SA1241GL

FAA Form 8110-2 (5/14) Page 4 of 4 Date reissued: July 19, 2006, August 18, 2017 Date amended: February 1, 1988, August 1, 1988

Limitations and Conditions (continued from page 3):

4. Aircraft specifications are the same as listed in TCDS 3A20, except for the following Propeller and Propeller Limits:

A. McCauley Propeller Model 4HFR34C762/94LMA-4:

Two McCauley 4HFR34C762 hubs with 94LMA-4 blades.

Diameter: 90 in. (max); minimum allowable for repair: 89 in.

Pitch setting at 30 in. sta.

Flight idle stop: Flight idle propeller low pitch stop is set so that at 2000 rpm there shall be an indicated 580 +/- 40 ft. -lb. torque corrected to sea level standard day.

Reverse: -10.0 +/- 0.4 degrees Feathered: +85.8 +/- 0.3 degrees Minimum propeller ground idle rpm for continuous operations shall not be less than 1100 rpm. Propeller may be feathered on the ground and idled at rotational speeds below 600 propeller shaft rpm.

B. McCauley Propeller Model 4HFR34C763/94LMA-4:

Two McCauley 4HFR34C763 hubs with 94LMA-4 blades.

Diameter: 90 in. (max); minimum allowable for repair: 89 in.

Pitch setting at 30 in. sta.

Flight idle stop: Flight idle propeller low pitch stop is set so that at 2000 rpm there shall be an indicated 580 +/- 40 ft. -lb. torque corrected to sea level standard day.

Reverse: -10.0 +/- 0.4 degrees Feathered: +85.8 +/- 0.3 degrees Minimum propeller ground idle rpm for continuous operations shall not be less than 1100 rpm. Propeller may be feathered on the ground and idled at rotational speeds below 600 propeller shaft rpm.

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