Fabrication and installation of a Stage 3 hushkit when powered by Pratt & Whitney JT8D-7, -9, or -11, -15, or -17 series engines.

Please contact modification supplier for further details.

STC Status: Reissued
STC Date: 01/08/08
Responsible Office: Chicago Aircraft Certification Office (ACE-115C), Tel: (847) 294-7358

McDonnell Douglas Corporation

• DC-9-31
• DC-9-32
• DC-9-32F
• DC-9-33F
• DC-9-34
• DC-9-34F
• DC-9-41
• DC-9-51