STC SA2581WE

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Reissued to replace certificate reported lost.

Number: SA2581WE This certificate issued to: Collins Radio Company 400 Collins Road, NE Cedar Rapids, Iowa 52498 Part 4b of the Civil Abir PRegulations. dated 31 December 1953 (See T. C. Data Sheet 4A25).

Original Product Typo Certificato Number: 4A25 Make: McDonnell Douglas Corp.

Model: See attached Master Eligibility List Number SA2581 WE Description of Type Design Change: Installation of Collins Radio Company internal navigation systems in accordance with the applicable FAA sealed drawings listed on the attached Master Eligibility List Number SA2581 WE.

Limitations and Conditions: The approval of this change in type design applies basically to the aircraft models listed on the FAA Approved Master Eligibility List Number SA2581 WE and should not be extended to other specific airplanes on which other previously approved modification are incorporated, unless it is determined that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse affect upon the airworthiness of that airplane. 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: July 14, 1972 Date Reissued: Mar. 31, 1998, Nov. 18, 1999 Date of Issuance: August 23, 1972 Date Amended:

FEDERAL AVIATION By Direction of the Administrator Michael & Maply TOMINISTRATO Staff, Los Angeles Aircraft Certification Office (Title)