STC SA2906NM

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number SA2906NM This certificate issued to: AAR Oklahoma, Inc.

Part 25 of the Federal Aviation Regulations:

Original Product - Type Certificate Number: A22CE Make: Cessna Model: 550 Descriplion a Sype Design Tha abin floor of Cesśna Modél 550 airplane S/N 550-055 in accordance with AAR Wester Installation of an Infra Red Scanner Pressure Tub in the Skyways Master Drawing List No. 84FS129, dated December 4, 1984, or later FAA approved revision. This tub is installed as an option to a smaller tub previously approved under STC No. SA1428NM. The tub mounting provisions of STC SA1428NM are a prerequisite to this installation. Further, seat tracks have been altered to facilitate installation of the new tub and are approved on FAA Form 337, dated March 1, 1985.

Limitations and Conditions: Data pertaining to this modification are considered inadequate for duplication in other aircraft. This approval is limited to the installation in Cessna model 550 aircraft, Serial Number 550-055 only. A copy of this Certificate and FAA Approved Flight Manual Supplement approved as part of STC SA1428NM shall be maintained as part of the permanent records for the modified aircraft.

Date of Application: December 5, 1984 Date Reissued: July 22, 1988 Julesfissmance: March 6, 1985 Date Amended:

FEDERAL AVIATION By Direction of the Administrator Dand Omiel TOMINISTRATO Manager, Seattle Aircraft Modification Branch (Title)

47.