AD 88-02-04

88-02-04 MARVEL SCHEBLER (FACET AEROSPACE PRODUCTS COMPANY): Amendment 39-5830. Applies to Marvel Schebler (Facet) Model MA-3PA carburetors, Part Numbers A10-5220, A10-5257, and A10-5267 manufactured since June 30, 1985, and having serial numbers as listed herein:

Carburetors Serial Number Model: MA-3PA DD-4-1583 through DD-4-1610 P/N: A10-5220 DD-4-1613, DD-4-1614, DD-4-1617, (Lycoming P/N: LW-16072) DD-4-1619 through DD-4-1622 Lycoming Engine Models: DD-4-1624 through DD-4-1627 O-235-C1C, O-235-L2A, and O-235-L2C DD-4-1629, DD-4-1632, and DD-4-1633

Model: MA-3PA DM-3-1818 through DM-3-1826, P/N: A10-5257 DM-3-1828 and DM-3-1829 (Lycoming P/N: LW-16677)

Lycoming Engine Models:

O-235-L2C and O-235-H2C

Model: MA-3PA DT-3-1911 through DT-3-1913, P/N: A10-5267 DT-3-1916, DT-3-1917 (Lycoming P/N: LW-16677) DT-3-1920, DT-3-1921, and Lycoming Engine Models: DT-3-1923 through DT-3-1981 O-235-L2C, O-235-N2C, and

O-235-P1Compliance is required within the next 25 hours time in service or 30 days, whichever occurs first, after the effective date of this AD, for all applicable carburetors, unless already accomplished.

To prevent possible loss of engine power due to a loose metering sleeve, accomplish the following:

(a) Check all Textron Lycoming Model O-235-C1C, O-235-L2A, O-235-L2C, O-235-H2C, O-235-N2C, and O-235-P1 engines incorporating Marvel Schebler (Facet) Model MA-3PA carburetors, Part Numbers A10-5220, A10-5257, and A10-5267 manufactured since June 30, 1985, to determine the carburetor serial number. This serial number can be found on the carburetor nameplate located on the throttle body.

(b) If the serial number is one of those listed, remove the carburetor, tag it as unairworthy, and replace it with a serviceable one prior to further flight. If the serial number is not one of those listed above, no further corrective action is required.

(c) Make an engine logbook entry that this AD has been complied with.

NOTE (1): Facet Service Bulletin (SB) A1-87, dated October 1987, pertains to this subject and gives instructions for returning the affected carburetors directly to the factory for corrective action.

If being returned to the factory, the owner should package the carburetor to prevent enroute damage and ship directly to Facet Aerospace Products Company, 1048 Industrial Park Road, Bristol, Virginia 24201, USA, Attention: William Smith.

NOTE (2): To indicate carburetor corrective action has been taken, Facet will have stamped the lower portion of the carburetor nameplate with the number "87", in which case no further action is required.

NOTE (3): Persons authorized by FAR 43.3(g) may perform the check of paragraph (a) and engine logbook entry of paragraph (c) of this AD if the carburetor serial number is not one of those listed above.

(d) Aircraft may be ferried in accordance with the provisions of FAR 21.197 and 21.199 toa base where the AD can be accomplished.

(e) Upon request, an equivalent means of compliance with the requirements of this AD may be approved by the Manager, New York Aircraft Certification Office, ANE-170, Federal Aviation Administration, 181 South Franklin Avenue, Room 202, Valley Stream, New York 11581.

(f) Upon submission of substantiating data by an owner or operator through an FAA maintenance inspector, the Manager, New York Aircraft Certification Office, Valley Stream, New York, may adjust the compliance time specified in this AD.

This amendment 39-5830 becomes effective on February 1, 1988.