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

AD 64-22-02 ACTIVE

Cove Light Systems
Key Information
AD Number 64-22-02 Status Active
Effective Date September 24, 1964 Issue Date Not specified
Docket Number Unknown Amendment N/A
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 727-100 Series 727-100C Series 727-200 Series 727-200F Series 727 Series 727C Series
Regulatory Text

64-22-02\tBOEING: Amdt. 816 Part 507 Federal Register September 24, 1964. Applies to Models 707, 720 and 727 Series Aircraft Having Fluorescent Cabin Cove Lights with Day-Ray Ballasts Type 62-37 With Serial Numbers Below 5639, or Servo Mechanism Ballast Type 562859. \n\n\tCompliance required within 50 hours' time in service after the effective date of this AD unless already accomplished. \n\n\tTo prevent overheating of the cove light ballast units, accomplish the following: \n\n\t(a)\tDeactivate all cabin fluorescent cove light systems by securing the circuit breakers for the cove light systems in the off position with a clip-on guard. \n\n\t(b)\tThe cove light systems may be reactivated upon installation of Day-Ray ballasts type 62-37, Serial Numbers 5639 and above, or Servo mechanism ballasts type 563116, or by an equivalent approved by the Aircraft Engineering Division, FAA Western Region. \n\n\tThis directive effective September 24, 1964.

AD 64-22-02 — Cove Light Systems
Printed from Aircraft-logs.com — 03/22/2026