STC SA1868NM

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA18631M This certificate issued to: Gulfstream Aerospace Corporation Purt 25* of the Federal Aviation Regulalions. (*For certification basis see I.C. Data Sheet A12EA, Revision 14) Original Product - Type Contificate Numben: A12BA Make: Gulfstream Aerospace Model: G-1159A FAA sealed AiResearch Drawing list IL 1100309, Revision "A" or later FAA sealed Description of Type Design Change: Installation of observer seat in accordance with revision.

Limitations and Conditions: An FAA approved oxygen system must be installed for use by the occupant of this observer seat. The approval of this change in type design applies basically to Gulfstream American G-1159A airplanes only. 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 modification will introduce no adverse effects on the airworthiness of that

Date of Application: November 30, 1982 Date Reissued: August 18, 1986 Date of Issuance: May 12, 1983 Date Amended:

FEDERAL AVIATION TO MINISTRATO Acting Manager, tos Angeles Airoraft Certification Office (Signature ) (Title)

47.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number.

to (Name of transferee).

(Address of transferee).

(Number and street) (City, State, and ZIP code) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State, and ZIP code ) Extent of Authority (if licensing agreement):

Signature of grantor (In ink): _