AD 80-17-04

80-17-04 AEROSONIC CORPORATION: Amendment 39-3873. Applies to all Aerosonic Fuel Flow Transducers, Part Numbers 33184-1 and 32622-6, installed on, but not limited to, Cessna Models 335, 340A, 402B, 404, 414A, and 421C; Mooney Aircraft Corporation Models M20J and M20K; and Piper Aircraft Aerostar Models 600, 601, and 601P airplanes certificated in all categories.

Compliance is required as indicated unless already accomplished.

To prevent possible fuel leakage, accomplish the following within the next 25 hours time in service after the effective date of this AD:

(a) Inspect for installation of Aerosonic Fuel Flow Transducers Part Numbers 33184-1 or 32622-6 (name plate has part number identification). If the Transducers(s) is identified with the word "FLO-SCAN" on the bottom, or is identified with an Aerosonic part number other than 33184-1 or 32622-6, or any other manufacturer's part number the unit(s) is acceptable.

(b) Remove Aerosonic Fuel Flow Transducers, Part Numbers 33184-1 and 32622-6 (except "FLO-SCAN) identified in paragraph (a) and reinstall Aerosonic replacement units identified with "FLO-SCAN", Serial Numbers 5000 and up.

(c) Accomplish the following in accordance with Aerosonic Service Bulletin No. 1 dated June 30, 1980, or Service Bulletin No. 2 dated June 26, 1980, as applicable:

(1) Torque fittings to 25-30 ft. lbs.

(2) Perform a system leak check.

(d) Make an appropriate entry in the aircraft maintenance record.

An equivalent method of compliance may be approved by the Chief, Engineering and Manufacturing Branch, Federal Aviation Administration, Southern Region.

This amendment becomes effective August 13, 1980.