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FAA
Federal Aviation Administration Department of Transportation
Aviation Safety
AIRWORTHINESS DIRECTIVE
Generated by Aircraft-logs.com — March 22, 2026

AD 70-16-04 ACTIVE

Cabin Cove Light Ballast
Key Information
AD Number 70-16-04 Status Active
Effective Date August 01, 1970 Issue Date Not specified
Docket Number Unknown Amendment 39-1052
Product Type ["Aircraft"] Product Subtype ["Large Airplane"]
CFR Part --- - Part 39 CFR Section N/A
Citation This information is not available.
Applicability
Manufacturer(s) The Boeing Company
Model(s) 707-100 Long Body 707-100B Long Body 707-100B Short Body 707-200 707-300 Series 707-300B Series 707-300C Series 707-400 Series 720 Series 720B Series
Regulatory Text

70-16-04\tBOEING: Amdt. 39-1052. Applies to Boeing Model 707/720 Series Airplanes. (Effectivity listed on Boeing Service Bulletin No. 2986 dated May 15, 1970, or later FAA approved revisions). \n\n\tCompliance required within 100 hours time in service after the effective date of this AD unless already accomplished.\n \n\tTo prevent fire caused by failure of the Main Cabin Cove Light Ballast Capacitors deactivate the main cabin cove light circuits until one of the following items has been accomplished: \n\n\t(1)\tRelocate all main cabin ballast capacitors to the inboard side of the cove light race way as described in Boeing Service Bulletin No. 2986 dated May 15, 1970, or later FAA approved revisions. \n\n\t(2)\tPerform an equivalent modification approved by the Chief, Aircraft Engineering Division, FAA Western Region. \n\n\tThis Amendment becomes effective on August 1, 1970.

AD 70-16-04 — Cabin Cove Light Ballast
Printed from Aircraft-logs.com — 03/22/2026