- Effective
- June 25, 1966
- 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 | 23 KB | 2abd49f8…5871175 | FAA DRS (API key needed) |
On this page
The airworthiness directive
64-17-01 BOEING: Amdt. 766 Part 507 Federal Register July 17, 1964. Applies to Models 707 and 720 Series Aircraft.
Compliance required as indicated.
Failures and malfunctions occurring in the fuel dump chute limit switches of the retractable dump chute system have caused switch overheating sufficient to scorch the connecting wires. To prevent this, accomplish the following:
(a) Within 500 hours' time in service after the effective date of this AD, and thereafter at periods not to exceed 500 hours' time in service, perform a resistance check on the fuel dump chute extend limit switch, P/N's 5EN11-6B or H11-186, and on the fuel dump chute up limit switch, P/N's 2EN15-6 or H11-162. If any switch is found defective, replace before further flight. (Boeing telegraphic messages 6-7161-1-9101 and 6-7161-1-9159 sent to all operators on February 3, and March 28, 1963, respectively, cover this resistance check.) Upon compliance with paragraph (b) the provisions of this paragraph may be discontinued.
(b) Within the next 2,500 hours' time in service after August 17, 1964, replace limit switches on each fuel dump chute that do not incorporate a sealed receptacle with improved switches incorporating a sealed receptacle and replace the switch pigtail type wires with new wires and a mating sealed connector, in accordance with Boeing Service Bulletin No. 1877, or an equivalent approved by the Chief, Aircraft Engineering Division, FAA Western Region.
(c) Upon request of the operator, an FAA maintenance inspector, subject to prior approval of the Chief, Aircraft Engineering Division, FAA Western Region, may adjust the repetitive inspection intervals specified in this AD to permit compliance at an established inspection period of the operator if the request contains substantiating data to justify the increase for such operator.
(Boeing Service Bulletin 1877 dated January 23, 1964, and Boeing telegraphic messages 6- 7161-1-9101 and 6-7161-1-9159 dated February 3, and March 28, 1963, respectively, cover this subject.)
This directive effective August 17, 1964.
Revised June 25, 1966.
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