What it approves
Replace standard Boeing engine thrust reverser forward pressure seal with improved type shown in United Air Lines drawing 3F-10888 and described in United Air Lines Report F-1010.
What the certificate says
From the PDF’s text layer, without the form’s printed wording. Layout and order may differ; the PDF is the record.
600 Jefferson Street Houston, Texas 77002
Part 25 of the Federal Aviation Regulations
4A28
Boeing
720-022 Description of Type Design Change: Replace standard Boeing engine thrust reverser forward pressure seal with improved type shown in United Air Lines drawing 3F-10888 and described in United Air Lines Report F-1010.
Limitations and Conditions: This approval should not be extended to other specific airplanes of this model on which other previously approved modifications are incorporated, unless it is determined that the interrelationship between this cha nge and any of those other previ ously approved modifications will introduce no adverse effect 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.
This certificate and the supporting data, which is the basis for approval, shall remain in effect until surrendered, suspended, revoked or a termination date is otherwise established by the Administrator of the Federal Aviation Administration.
Date of application: March 28, 1966
Date of issuance: June 3, 1966
Date reissued: November 30, 2011
( Signature) Haifa Haj-Eid Supervisor, Technical & Administrative Support Staff, Los Angeles Aircraft Certification Office ( Title)
NOTE:
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ADs that name this STC · 0
An AD can apply because an STC is installed, or mention one in its text.
Approved models · 1
| Make | Model | Data sheet |
|---|---|---|
| The Boeing Company | 720 Series | 4A28 |