# AD 67-33-03: Pressure Fueling Valves - Type: Airworthiness directive - Status: Current - Products: Kelowna Flightcraft R & D 240 Series, 340 and 440 with STC SA1054WE or 3 others - Effective: October 3, 1972 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Large airplane - Amendment: 39-1528 - Registered aircraft: 12 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/53F7C8A66FA3E08E86256E010054667C.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/67-33-03 ## The airworthiness directive 67-33-03 GENERAL DYNAMICS: Amdt. 39-528 Part 39 Federal Register December 29, 1967, as amended by Amendment 39-1528. Applies to Model 240/340/440 airplanes using turbo-propeller power which have been modified to incorporate underwing pressure fueling per STC Nos. SA1316WE, SA1132WE, SA1096WE or SA1054WE. Compliance required as indicated. Because of three reports of overpressurization of the wing fuel tank in affected airplane types that have been attributed to failure of the upper and lower diaphragm assemblies in the pressure fueling valves (P/N 2640644 or P/N 2650198), accomplish the following: (1) Before further flight from the next maintenance base where facilities and personnel are available, externally inspect each wing in the area of the fuel tank for fuel leakage; (2) If fuel leakage is found as a result of the inspection per Paragraph (1), before further flight internally inspect each wing fuel tank exhibiting fuel leakage for presence of structural damage; (3) If structural damage is found as a result of the inspection per Paragraph (2), before further flight repair portion of each wing exhibiting structural damage as necessary; and (4) Within thirty days after the effective date of this amendment to AD 67-33-03, unless already accomplished, install adjacent to each underwing refuel valve in clear view of ground fueling crews a placard stating, 'Remove the overwing filler cap(s) while fueling the tank above 80% capacity. If not, further inspection required per AD 67-33-03.' When fueling at or above 80% of the fuel tank capacity, perform all underwing fueling with overwing fuel tank filler cap(s) removed. The placard may be removed, and the procedure described in this paragraph may be discontinued after the accomplishment of (5) below. (5) Compliance with paragraph (4) is no longer required: (a) When underwing pressure fueling system as installed on the Model 240 aircraft is modified to incorporate a pressure vent valve in accordance with Aircraft Tank Service, Incorporated, Drawing 2036, Change "A", entitled 'Refueling Valve Installation-CV 240', dated April 23, 1966, or later FAA-approved revisions, or an equivalent modification approved by the Chief, Aircraft Engineering Division, Western Region. (b) When the underwing pressure fueling system as installed on the Model 340/440 aircraft is modified to incorporate a pressure vent valve in accordance with Aircraft Tank Service, Incorporated, Drawing 2363, Change "B", entitled 'Installation of Pressure Vent Valve-Wing Fuel Tanks - Convair 340/440', dated July 3, 1968, or later FAA-approved revisions, or an equivalent modification approved by the Chief, Aircraft Engineering Division, Western Region. (6) If either (a) fuel leakage or overpressurization is detected in operation, or (b), the aircraft is known to have been refueled not in accordance with the procedure set forth in paragraph (4) above, repeat the inspection described in paragraphs (1) and (2) above, and accomplish repairs, per (3) above, if applicable. Amendment 39-528 was effective December 29, 1967, for all persons except those to whom it was made effective immediately by telegram issued previously. This Amendment 39-1528 is effective October 3, 1972. ## Affected data sheets (2) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS 6A6](https://openairdocs.org/tcds/6A6): Kelowna Flightcraft R & D Ltd.; names 2 of 6 models: 340, 440 - [TCDS A-793](https://openairdocs.org/tcds/A-793): Kelowna Flightcraft R & D Ltd.; names 1 of 1 models: 240 Series ## 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: 12 (12 by airframe model, 0 by engine model) - Makers: Convair 12 Models with the most aircraft: - [Convair 340](https://openairdocs.org/model/convair-340): 7 aircraft (airframe model) - [Convair 440](https://openairdocs.org/model/convair-440): 5 aircraft (airframe model) All 2 models: https://openairdocs.org/ad/67-33-03/models.md Every aircraft: https://openairdocs.org/ad/67-33-03/aircraft.md ## Related documents - [STC SA1054WE](https://openairdocs.org/stc/SA1054WE): Installation of Rolls-Royce model Dart 542-4 engines with Dowty Rotol R245/4-40-4.5/13 propellers and associated modifications to engine mounting, nacelle, empennage, accessories, systems and equipment.. Executive Jet Aircraft Co. LTD. c/o Southeast Aero Tek Inc., Named in the applicability - [STC SA1096WE](https://openairdocs.org/stc/SA1096WE): Rolls Royce Dart 542-4 engines with Dowty Rotol (c) R245/4-40-4.5/13 or (c) R259/4-40-4.5/17 propellers and associated modifications.. Kelowna Flightcraft Ltd, Named in the applicability - [STC SA1132WE](https://openairdocs.org/stc/SA1132WE): Installation of an underwing pressure refueling system and fuel level indicator. Rogerson ATS, Named in the applicability - [STC SA1316WE](https://openairdocs.org/stc/SA1316WE): Underwing pressure refueling system and Roylin Magna Stick fuel level indicator.. Aircraft Tank Service Inc, Named in the applicability --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.