Service difficulty reports (SDR)Components 15th October to 13th November 2018 By staff writers - Dec 21, 2018 1177 ATA 2590 NON-STANDARD EQUIPMENT SYSTEM–Night Vision Goggles–Single Tube Failure–PART NO. AV/AVS-9(V) F4949G . DR 611852746 Single tube failure during ground testing. OEM has been notified. Share this article PrintemailFacebook0TwitterLinkedin