- Effective
- March 26, 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
- Amendment
- 39-200
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 | 20 KB | fcfa7cc0…54339fd | FAA DRS (API key needed) |
On this page
The airworthiness directive
66-06-02 BOEING: Amdt. 39-200 Part 39 Federal Register February 24, 1966. Applies to Models 707 and 720 Series Airplanes Equipped with Turbofan Engines and strut Mounted P(t2) Probes.
Compliance required within the next 1,800 hours' time in service after the effective date of this AD unless already accomplished.
There have been numerous instances of the aft edges of the turbocompressor dipstick access door, which is in front of the strut mounted P(t2) probe, becoming unfaired in flight and causing erroneous readings of the EPR (engine pressure ratio) system. To prevent erroneous readings of the EPR system, install an additional rotary latch on the aft edge of the access door in accordance with Boeing Service Bulletin No. 2143 or later FAA-approved revision or an equivalent approved by the Chief, Aircraft Engineering Division, FAA Western Region.
This directive effective March 26, 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