# SAIB NE-13-15: Engine Controls: Continental Motors, Inc. (CMI) Throttle and Mixture Control Levers - Type: Special airworthiness information bulletin (advisory, not mandatory) - Status: Current - Revision: 0 - Issued: February 8, 2013 - Products: Continental Motors GIO-470-A, GTSIO-520-C, GTSIO-520-D, GTSIO-520-E, GTSIO-520-F, GTSIO-520-H, GTSIO-520-K, GTSIO-520-L, GTSIO-520-M, GTSIO-520-N, IO-240-A, IO-240-B and 138 more - Product type: Engine - PDF: https://openairdocs.org/files/sha256/80/9f/809f41919df5cd212846cccf25441d9c86517f446d6655fd4124240d6c7178ba - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/79C958591C5C6B4786257B0C004CCDC7.0001 - DRS record last changed: February 8, 2013 - Page: https://openairdocs.org/saib/NE-13-15 ## Text FAA Aviation Safety **SPECIAL AIRWORTHINESS** INFORMATION BULLETIN SUBJ: Engine Controls: Continental Motors, Inc. (CMI) Throttle and Mixture Control Levers SAIB: NE-13-15 Date: February 8, 2013 This is information only. Recommendations aren’t mandatory. Introduction This Special Airworthiness Information Bulletin (SAIB) is to advise you, registered owners, operators, and certified repair facilities, of airplanes equipped with Continental Motors, Inc. (CMI), continuous flow, fuel injected engines (except FADEC-equipped engines), of an airworthiness concern related to certain throttle and mixture control levers. Affected engines include all IO-240, IO-360, LTSIO-360, TSIO-360, IO-346, IO-470, GIO-470, TSIO-470, IO-520, GTSIO-520, LIO-520, TSIO-520, IO-550, GIO-550, TSIO-550, and TSIOL-550 continuous flow, fuel injected engines (except FADEC-equipped engines). The airworthiness concern is not an unsafe condition that would warrant airworthiness directive (AD) action under Title 14 of the Code of Federal Regulations (14 CFR) part 39. Background The FAA has received reports from the field of throttle and mixture control levers loosening during service, resulting in either a partial or complete loss of throttle and/ or mixture control. The subject throttle and mixture control levers were manufactured from a bronze material. Splines on the mating control shaft are pressed into the bronze control levers during installation by torquing a lock nut. Reinstalling bronze material levers can cause premature wear on the lever splines thereby reducing the amount of engagement with the control shaft. Additional wear during service can lead to complete disengagement of the splines and result in loss of throttle and/ or mixture control. Bronze material is no longer used to manufactur these levers. CMI now manufactures these levers from stainless steel. The stainless steel levers have machined splines that are more durable to prevent premature wear. Additionally, CMI has issued CMI Critical Service Bulletin CSB08-3B, Revision B, dated February 1, 2013, which requires replacement of all bronze material throttle and mixture levers with the new stainless steel levers at the next 100 hour, or annual, inspection, or when the lever is removed for any reason, whichever occurs first. Recommendation The FAA recommends that you remove the bronze material throttle and mixture control levers from service in accordance with the guidance in CMI Critical Service Bulletin CSB08-3B. For Further Information Contact Eric B. Potter, Aerospace Engineer, Atlanta Aircraft Certification Office, FAA, Small Airplane Directorate, 1701 Columbia Ave., College Park, GA 30337; phone: (404) 474-5583; fax: (404) 474- 5806; email: eric.potter@faa.gov. 2 For Related Service Information Contact Continental Motors, Inc., Factory Service, 2039 South Broad Street, Mobile, AL 36615; phone: (800) 326-0089. ## Registered aircraft it may concern (OpenAirDocs) Registry models matched by make and model, the same way as ADs, most registered aircraft first. - [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series): 9,486 registered aircraft (engine model) - [Continental I0-470 series](https://openairdocs.org/engine/continental-i0-470-series): 4,499 registered aircraft (engine model) - [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series): 4,064 registered aircraft (engine model) - [Continental IO-550 series](https://openairdocs.org/engine/continental-io-550-series): 3,077 registered aircraft (engine model) - [Continental TSIO-550-K](https://openairdocs.org/engine/continental-tsio-550-k): 2,799 registered aircraft (engine model) - [Continental IO-550-N](https://openairdocs.org/engine/continental-io-550-n): 2,772 registered aircraft (engine model) - [Continental TSIO-360 series](https://openairdocs.org/engine/continental-tsio-360-series): 1,907 registered aircraft (engine model) - [Continental IO-360 series](https://openairdocs.org/engine/continental-io-360-series): 1,885 registered aircraft (engine model) - [Continental TSIO-550-C](https://openairdocs.org/engine/continental-tsio-550-c): 480 registered aircraft (engine model) - [Continental IO-360-ES](https://openairdocs.org/engine/continental-io-360-es): 401 registered aircraft (engine model) - [Continental GTSIO-520-C](https://openairdocs.org/engine/continental-gtsio-520-c): 387 registered aircraft (engine model) - [Continental TSIO-550 series](https://openairdocs.org/engine/continental-tsio-550-series): 382 registered aircraft (engine model) - [Continental IO-550-B](https://openairdocs.org/engine/continental-io-550-b): 373 registered aircraft (engine model) - [Continental IO-470 series](https://openairdocs.org/engine/continental-io-470-series): 225 registered aircraft (engine model) - [Continental IO-240-B](https://openairdocs.org/engine/continental-io-240-b): 212 registered aircraft (engine model) - [Continental IO-550-C](https://openairdocs.org/engine/continental-io-550-c): 199 registered aircraft (engine model) - [Continental GTSIO-520 series](https://openairdocs.org/engine/continental-gtsio-520-series): 178 registered aircraft (engine model) - [Continental IO-346 series](https://openairdocs.org/engine/continental-io-346-series): 131 registered aircraft (engine model) - [Continental TSIO-550-G](https://openairdocs.org/engine/continental-tsio-550-g): 129 registered aircraft (engine model) - [Continental IO-550-G](https://openairdocs.org/engine/continental-io-550-g): 115 registered aircraft (engine model) - [Continental IO-240 series](https://openairdocs.org/engine/continental-io-240-series): 111 registered aircraft (engine model) - [Continental IO-520-D](https://openairdocs.org/engine/continental-io-520-d): 95 registered aircraft (engine model) - [Continental IO-520-F](https://openairdocs.org/engine/continental-io-520-f): 80 registered aircraft (engine model) - [Continental TSI0-470-B](https://openairdocs.org/engine/continental-tsi0-470-b): 75 registered aircraft (engine model) - [Continental TSIO-520-M](https://openairdocs.org/engine/continental-tsio-520-m): 60 registered aircraft (engine model) - [Continental TSIO-520-NB](https://openairdocs.org/engine/continental-tsio-520-nb): 52 registered aircraft (engine model) - [Lycoming IO-520 series](https://openairdocs.org/engine/lycoming-io-520-series): 49 registered aircraft (engine model) - [TCM Cont TSIO-520 series](https://openairdocs.org/engine/tcm-cont-tsio-520-series): 49 registered aircraft (engine model) - [Continental TSIO-550-E](https://openairdocs.org/engine/continental-tsio-550-e): 46 registered aircraft (engine model) - [Continental IO-520-BB](https://openairdocs.org/engine/continental-io-520-bb): 44 registered aircraft (engine model) - [Continental IO-550-D](https://openairdocs.org/engine/continental-io-550-d): 36 registered aircraft (engine model) - [Continental IO-360-D](https://openairdocs.org/engine/continental-io-360-d): 34 registered aircraft (engine model) - [Continental TSIO-360-FB](https://openairdocs.org/engine/continental-tsio-360-fb): 29 registered aircraft (engine model) - [Continental TSIO-520-UB](https://openairdocs.org/engine/continental-tsio-520-ub): 27 registered aircraft (engine model) - [Continental IO-550-F](https://openairdocs.org/engine/continental-io-550-f): 26 registered aircraft (engine model) - [Continental IO-520-BA](https://openairdocs.org/engine/continental-io-520-ba): 25 registered aircraft (engine model) - [Continental TSIO-360-KB](https://openairdocs.org/engine/continental-tsio-360-kb): 23 registered aircraft (engine model) - [Continental IO-470-L](https://openairdocs.org/engine/continental-io-470-l): 22 registered aircraft (engine model) - [Continental TSIO-520-R](https://openairdocs.org/engine/continental-tsio-520-r): 22 registered aircraft (engine model) - [Continental TSIO-360-RB](https://openairdocs.org/engine/continental-tsio-360-rb): 20 registered aircraft (engine model) - [Continental TSIO-520-WB](https://openairdocs.org/engine/continental-tsio-520-wb): 19 registered aircraft (engine model) - [Lycoming I0-360-ES](https://openairdocs.org/engine/lycoming-i0-360-es): 18 registered aircraft (engine model) - [Continental TSIO-360 GB](https://openairdocs.org/engine/continental-tsio-360-gb): 17 registered aircraft (engine model) - [Continental TSIO-520-C](https://openairdocs.org/engine/continental-tsio-520-c): 17 registered aircraft (engine model) - [Continental GTSIO-520-L](https://openairdocs.org/engine/continental-gtsio-520-l): 16 registered aircraft (engine model) - [Continental IO-520-B](https://openairdocs.org/engine/continental-io-520-b): 16 registered aircraft (engine model) - [Continental IO-360-A](https://openairdocs.org/engine/continental-io-360-a): 15 registered aircraft (engine model) - [Continental IO-360-C](https://openairdocs.org/engine/continental-io-360-c): 14 registered aircraft (engine model) - [Continental TSIO-360-EB](https://openairdocs.org/engine/continental-tsio-360-eb): 13 registered aircraft (engine model) - [Continental IO-470-N](https://openairdocs.org/engine/continental-io-470-n): 12 registered aircraft (engine model) All 165: https://openairdocs.org/saib/NE-13-15/models.md --- 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.