- Model
- 247-D (Army C-73)
- Data sheet
- TCDSATC 558
- Registered aircraft
- 1 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 | 19 KB | fcc11c04…1b4bec7 | FAA DRS (API key needed) |
On this page
The airworthiness directive
46-05-01 BOEING: (Was Mandatory Note 4 of AD-558-1 and Mandatory Note 4 of AD 524- 1.) Applies to Model 247 Aircraft. Compliance required not later than next major overhaul. Replace the elbow located between the engine fuel pump discharge port and the fuel discharge line with a steel elbow of the type AN 822-10 or an equivalent steel elbow to suit the particular pump and discharge line installation. Also, ascertain that there is adequate clearance between the elbow and adjacent engine parts. (Boeing Service Bulletin No. 3 of D-6134 dated December 17, 1945, covers this same subject.)
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 1
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.