# AD 93-19-04: Carburetors - Type: Airworthiness directive - Status: Current - Products: Continental Motors A-65-1, A-65-12, A-65-12F, A-65-12FJ, A-65-12J, A-65-14, A-65-14F, A-65-14FJ, A-65-14J, A-65-3, A-65-6, A-65-6J and 175 more - Effective: October 18, 1993 - Superseded by: Nothing supersedes this AD - Product type: Appliance - Amendment: 39-8700 - Docket: 93-ANE-61 - Registered aircraft: 72,838 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DA28338BF3FCB4C786256A410065BB2D.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/93-19-04 ## The airworthiness directive 93-19-04 PRECISION AIRMOTIVE (formerly Facet Aerospace Products (formerly Marvel-Schebler)): Amendment 39-8700. Docket 93-ANE-61. Supersedes Priority Letter AD 92-15-16 issued on July 9, 1992. Applicability: Precision Airmotive (formerly Facet Aerospace Products (formerly Marvel-Schebler)) Model MA3, MA3A, MA3PA, MA3SPA, and MA4SPA carburetors installed on but not limited to Textron Lycoming Model O-235, O-290, and O-320 series engines, and Teledyne Continental A-65, A-75, C-75, C-85, C-90, C-115, C-125, C-145, O-200, and O-300 series engines installed on but not limited to normally aspirated piston engine powered aircraft manufactured by Cessna, Piper, Beechcraft, and Mooney. Compliance: Required as indicated, unless accomplished previously. To prevent a disruption of fuel flow to the engine, resulting in engine power loss, engine failure, and damage to the aircraft, accomplish the following: (a) Prior to further flight, for carburetors repaired or rebuiltfrom November 1, 1991, through July 15, 1992, accomplish the following: (1) Visually inspect the float for Consolidated Fuel Systems (CFS) Part Number (P/N) CF 30-766 and remove the float if the date "10 91" is stamped on the top of the float lever arm, and replace with a serviceable float. NOTE: CFS Mandatory Service Bulletin CF-1-92, Revision 1, dated July 6, 1992, gives a listing of those known carburetors repaired or rebuilt during the suspect time period. NOTE: Guidance on replacing floats is contained in either Precision Airmotive (Facet) Aircraft Carburetor Service Manual, dated September 1984, or CFS Carburetor Float Kit Installation Instructions, CF 666-915. (2) Floats identified with Precision Airmotive P/N 30-766 with any date stamped on the float lever arm, or CFS P/N CF 30-766 with dates 8 89, 12 89, 1 90, 2 90, 8 90, 10 90, 1 91, 2 91, 4 91, 4 92, or 7 92 stamped on the float lever arm do not need to be removed. (b) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Engine Certification Office. The request should be forwarded through an appropriate FAA Maintenance Inspector, who may add comments and then send it to the Manager, Engine Certification Office. NOTE: Information concerning the existence of approved alternative methods of compliance with this airworthiness directive, if any, may be obtained from the Engine Certification Office. (c) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the aircraft to a location where the requirements of this AD can be accomplished. (d) This amendment becomes effective on October 18, 1993. ## Affected data sheets (9) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS E-274](https://openairdocs.org/tcds/E-274): Lycoming Engines; names 60 of 60 models: O-320-H3BD, O-320-D2G, O-320-E2G, O-320-D3G, O-320-C2B, O-320-E2B, O-320-E2C, O-320-D2H… - [TCDS E-223](https://openairdocs.org/tcds/E-223): Lycoming Engines; names 42 of 43 models: O-235-K2C, O-235-M3C, O-235-A, O-235-F2A, O-235-P2A, O-235-E1, O-235-J2B, O-235-C2B… - [TCDS E-205](https://openairdocs.org/tcds/E-205): Continental Aerospace Technologies, Inc.; names 21 of 21 models: A-65-14F, A-65-8FJ, A-65-9F, A-65-14FJ, A-65-9J, A-65-12F, A-65-3, A-65-9… - [TCDS E-233](https://openairdocs.org/tcds/E-233): Continental Aerospace Technologies, Inc.; names 16 of 31 models: C85-14F, C85-12F, C75-8F, C75-15, C75-8FHJ, C75-8FJ, C85-8FHJ, C85-12J… - [TCDS E-252](https://openairdocs.org/tcds/E-252): Continental Aerospace Technologies, Inc.; names 15 of 15 models: C90-8F, O-200-A, C90-12F, C90-12FP, O-200-C, C90-8FJ, C90-14FJ, C90-12FH… - [TCDS E-229](https://openairdocs.org/tcds/E-229): Lycoming Division AVCO Corporation; names 10 of 10 models: O-290-D2, O-290-D, O-290-B, O-290-A, O-290-CP, O-290-AP, O-290-D2A, O-290-C… - [TCDS E-213](https://openairdocs.org/tcds/E-213): Continental Aerospace Technologies, Inc.; names 9 of 9 models: A75-3, A75-9, A75-6J, A75-8, A75-9J, A75-6, A75-8J, A75-8FJ… - [TCDS E-253](https://openairdocs.org/tcds/E-253): Continental Aerospace Technologies, Inc.; names 8 of 8 models: C145-2, O-300-A, O-300-D, O-300-C, C145-2H, O-300-B, O-300-E, C145-2HP - [TCDS E-236](https://openairdocs.org/tcds/E-236): Continental Aerospace Technologies, Inc.; names 4 of 4 models: C-125-1, C-125-2, C-115-1, C-115-2 ## 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: 72,838 (0 by airframe model, 72,838 by engine model) - Makers: Cessna 30,356, Piper 20,081, Aeronca 3,549, Taylorcraft 1,701, Champion 1,391, Luscombe 1,365, Bellanca 933, Grumman American Avn. 931, Ercoupe 793, Engineering & Research 528 Models with the most aircraft: - [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series): 27,057 aircraft (engine model) - [Continental 0-200 series](https://openairdocs.org/engine/continental-0-200-series): 8,790 aircraft (engine model) - [Continental A&C65 series](https://openairdocs.org/engine/continental-a-c65-series): 7,967 aircraft (engine model) - [Continental 0-300 series](https://openairdocs.org/engine/continental-0-300-series): 6,622 aircraft (engine model) - [Lycoming 0-235 series](https://openairdocs.org/engine/lycoming-0-235-series): 6,133 aircraft (engine model) - [Continental C85 series](https://openairdocs.org/engine/continental-c85-series): 4,671 aircraft (engine model) - [Continental C90 series](https://openairdocs.org/engine/continental-c90-series): 2,149 aircraft (engine model) - [Lycoming 0-290 series](https://openairdocs.org/engine/lycoming-0-290-series): 2,126 aircraft (engine model) - [Continental C145 series](https://openairdocs.org/engine/continental-c145-series): 1,828 aircraft (engine model) - [Continental A&C75 series](https://openairdocs.org/engine/continental-a-c75-series): 1,504 aircraft (engine model) - [Continental O-200 series](https://openairdocs.org/engine/continental-o-200-series): 329 aircraft (engine model) - [Continental C125 series](https://openairdocs.org/engine/continental-c125-series): 322 aircraft (engine model) - [Continental O-200A](https://openairdocs.org/engine/continental-o-200a): 295 aircraft (engine model) - [Lycoming O-320-E2D](https://openairdocs.org/engine/lycoming-o-320-e2d): 258 aircraft (engine model) - [Lycoming O-320 series](https://openairdocs.org/engine/lycoming-o-320-series): 256 aircraft (engine model) - [Continental O-200-D](https://openairdocs.org/engine/continental-o-200-d): 210 aircraft (engine model) - [Lycoming O-320-A2B](https://openairdocs.org/engine/lycoming-o-320-a2b): 180 aircraft (engine model) - [Continental A-65-8](https://openairdocs.org/engine/continental-a-65-8): 137 aircraft (engine model) - [Lycoming O-320-D3G](https://openairdocs.org/engine/lycoming-o-320-d3g): 134 aircraft (engine model) - [Lycoming O-320-D1A](https://openairdocs.org/engine/lycoming-o-320-d1a): 116 aircraft (engine model) All 115 models: https://openairdocs.org/ad/93-19-04/models.md Every aircraft: https://openairdocs.org/ad/93-19-04/aircraft.md Its text cites no advisory circulars or STCs. ## NTSB investigations that cite this AD (1) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB LAX00LA062](https://openairdocs.org/ntsb/LAX00LA062), Jan 2, 2000: Cessna 172A (N7249T), Dos Palos, CA, substantial damage. Probable cause: A partial loss of engine power due to the failure of maintenance personnel to properly install and safety the throttle arm to the carburetor throttle shaft. --- 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.