- Effective
- February 7, 1964
- Models
- 707-100 Long Body, 707-100B Long Body, 707-100B Short Body, 707-200, 707-300 Series, 707-300B Series and 4 more
- Registered aircraft
- 6 matched by model
- Product
- Aircraft · Large airplane
Unofficial copy of the text in the FAA’s Dynamic Regulatory System. The FAA’s own copy is the authoritative one. DRS record last changed May 30, 2024.
Copies of the files this page was built from, with their SHA-256. Retrieved October 18, 2026.
| File | Size | SHA-256 | Original |
|---|---|---|---|
| FAA DRS HTML | 21 KB | a09c1059…0065247 | FAA DRS (API key needed) |
On this page
The airworthiness directive
64-01-02 BOEING: Amdt. 668 Part 507 Federal Register January 7, 1964. Applies to All Models 707 and 720 Series Airplanes Listed in Boeing Service Bulletin No. 1788.
Compliance required within 6,000 hours' time in service after the effective date of this AD unless already accomplished.
Instances of engine burner case burn through have occurred in service resulting in damage to the nacelle and lower strut in which detection of the fire was delayed because there are no fire detector elements in the area on top of the engine. To correct this unsafe condition, the following must be accomplished:
Install additional fire detector elements (continuous or unit type) between the horizontal firewall and the top of the engine in the area between nacelle Stations 160 and 180. This additional detector installation shall be made in accordance with Boeing Service Bulletin No. 1788 dated July 11, 1963, or in accordance with an installation approved by the Chief, Engineering and Manufacturing Branch, FAA Western Region.
(Boeing Service Bulletin No. 1788 covers the installation applicable to the various fire detector systems as installed on different groups of airplanes.)
This directive effective February 7, 1964.
Affected TCDS · 3
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 6
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1968 | 1 |
|---|---|
| 1977 | 1 |
4 with no year recorded