STC SE51WE

SE51WE TALCO Aviation 3015 E. New York St, STE A2-270 Aurora, IL 60504 * * 1E15 Avco Lycoming IO-720-A1A, IO-720-A1B Installation of two (2) Roto-Master (Rajay) P/N 600573-00 (RJ0326, RJ0326-1) or 600576-00 (RJ0326-2) (or any combination thereof) Turbochargers on Avco Lycoming Model IO-720-A1A and IO-720-A1B engines in accordance with Roto-Master (Rajay) Drawing RJ0999 or later FAA approved revision.

(See continuation sheet 3 of 3) November 2, 1970 February 10, 1982, October 30, 1987, September 22, 1995, December 19, 2003, June 26, 2006, March 16, 2007, March 12, 2018, February 2, 2021; August 31, 2023 May 27, 1971 January 18, 1974, March 21, 1985 for Paul (Vu) Nguyen Manager, Central Certification Branch Compliance & Airworthiness Division Aircraft Certification Service 3

SE51WE 3

SE51WE Date of Issuance: May 27, 1971 Date Amended: March 21, 1985 Date of Reissuance: August 31, 2023

*Part 13 of the Civil Air Regulations as amended to June 15, 1956 and 13-1 through

13-4.

This approval applies only to Turbocharger/engine compatibility. The limitations and conditions of FAA Type Certificate Data Sheet 1E15 apply, except as supplemented below. The installer must determine whether this design change is compatible with previously approved modifications. If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission.

OPERATING LIMITATIONS WITH TURBOCHARGER ASSISTANCE

CONDITION INTAKE MANIFOLD PRESSURE ENGINE SPEED

T.O (3 Min). 28.5 in. HgA 2650 RPM

M.C . 27.0 in. HgA 2500 RPM

NOTES:

1. Maximum air throttle inlet temperature, 210˚F

2. Maximum cylinder exhaust pressure, 34.0 in. Hg.A.

3. Do not operate the turbochargers unless the engine throttle is full open. When increasing power, fully open engine throttle, then slowly close the exhaust wastegate until the desired intake manifold pressure is obtained. When decreasing power, fully open exhaust wastegate, then close engine throttle.

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