STC SA3940SW-D

Hrritri Starts or amenta Bepartmcnt of "transportation —federal 2toiation administration Supplemental 'Cgpe Certificate SA3940SW-D . .'t*aM£a£u r,'/r<* na( • American Airlines, Inc.

Maintenance & Engineering Center Tulsa, Oklahoma 74151 -cn nGt*' *> rncc&i. 2 5 x^« Federal A V 1° 3 t i 0 n A20WE Boeing Airplane Co.

747SP - 31 £X-^//ySi£ _/ ^c&ia Install floor proximity emergency" path markings in compliance with FAR Amendments25-58 and 121-183 per ECO Y3001 , rev A.

This approval should not be incorporated in any aircraft of this specific model on which other approved modifications are incorporated, unless it is determined that interrelationships between this change and any of those other previously incorporated approved modifications will introduce no adverse affect upon theairworthiness of that aircraft.

SxdmtnmJt'a&rr^ : 4/2/87 4/9/87 A. P. Voeller(Signature) DAS-ISW Coordinator (Title)

This certificate may be transferred in accordance with FAR 21.17.

FAA FotM 1110-2 (10-68)

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number __ to (Name of transferee) (Address of transferee) (Number and street) (City, State, and <7/> code) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State, and <7F code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):