# AD 46-05-01: Fuel Pump Elbow

- Type: Airworthiness directive
- Status: Current
- Products: Boeing 247-D (Army C-73)
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Registered aircraft: 1 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/81C23863B5F0E1268625682A00642221.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/46-05-01

## 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 data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS ATC 558](https://openairdocs.org/tcds/ATC%20558): The Boeing Company; names 1 of 1 models: 247-D (Army C-73)

## Registered aircraft it may apply to (OpenAirDocs)

Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment.

- Aircraft: 1 (1 by airframe model, 0 by engine model)
- Makers: Boeing 1

Models with the most aircraft:

- [Boeing 247D](https://openairdocs.org/model/boeing-247d): 1 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/46-05-01/models.md
Every aircraft: https://openairdocs.org/ad/46-05-01/aircraft.md

Its text cites no advisory circulars or STCs.

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