# SAIB 2023-02: Landing Gear System - Type: Special airworthiness information bulletin (advisory, not mandatory) - Status: Current - Revision: 0 - Issued: March 3, 2023 - Products: Mooney International M20, M20A, M20B, M20C, M20D, M20E, M20F, M20G, M20J, M20K, M20L, M20M and 5 more - Product type: Aircraft, Small Airplane - PDF: https://openairdocs.org/files/sha256/a8/8d/a88d1471e5275eaf187fffd0485a320a9950e310bbffe38ca60e8c3b509b4f84 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID169699427420230306144536.0001 - DRS record last changed: November 21, 2025 - Page: https://openairdocs.org/saib/2023-02 ## Text FAA Aviation Safety **SPECIAL AIRWORTHINESS** INFORMATION BULLETIN SUBJ: Landing Gear System SAIB: 2023-02 Date: March 3, 2023 This is information only. Recommendations aren’t mandatory. Introduction This Special Airworthiness Information Bulletin (SAIB) informs owners, operators, and maintenance technicians of an airworthiness concern for Mooney International Corporation (Mooney) Model M20, M20A, M20B, M20C, M20D, M20E, M20F, M20G, M20J, M20K, M20L, M 20M, M20R, M20S, M20TN, M20U, and M20V airplanes . At this time, 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 After receiving reports of landing gear failures on Mooney M20 series airplanes related to improper maintenance, age, operational deterioration, and/or failure to perform established inspection and rigging requirements and procedures in applicable maintena nce instructions, the Federal Aviation Administration (FAA) issued SAIB CE -14-12, dated March 14, 2014, recommending that owners and operators of Mooney M20, M20A, M20B, M20C, M20D, M20E, M20F, M20G, M20J, M20K, M20L, M20M, M20R, M20S, and M20TN airplanes comply with Mooney Service Instruction M20-122, dated December 12, 2013 (SI M20 -122), by following the applicable Mooney 100 -Hour Inspection Guide and Service and Maintenance Manual instructions at each annual (100 -hour) inspection. Since the FAA issued SAIB CE-14-12 and Mooney issued SI M20 -122, there have been additional incidents involving landing gear failures and gear -up landings in both manual and electric landing gear-equipped airplanes. In response to these additional incidents, Mooney released Ser vice Bulletin M20-344, dated November 28, 2022 (SB M20-344), which contains information on how to operate and maintain manual and electric landing gear systems. Recommendations The FAA recommends that all Mooney M20 series airplane owners and operators:  Continue to comply with SI M20 -122 by following the applicable Mooney 100 -Hour Inspection Guide and Service and Maintenance Manual instructions at each annual (100-hour) inspection.  Review Mooney Service Bulletin M20 -344 for information on proper maintena nce and operation of the manual and electric landing gear systems. Additionally, for Mooney M20 series airplane owners and operators with a Johnson Bar landing gear system installed, the FAA recommends that you:  Ensure that nose gear and main landing gear tensions are to specifications.  Ensure the gear retraction components are regularly and properly lubricated.  Ensure landing gear is rigged correctly during routine maintenance and airplane repainting. Finally, following any gear-up landing event, the FAA recommends reporting the following information to the FAA contacts listed below:  Airplane make/model/registration number.  Type of landing gear system.  Date of last maintenance performed on landing gear system. Paperwork Reduction Act Burden Statement A federal agency may not conduct or sponsor, and a person is not required to respond to, nor shall a person be subject to a penalty for failure to comply with a collection of information subject to the requirements of the Paperwork Reduction Act unless that collection of information displays a current valid OMB Control Number. The OMB Control Number for this information collection is 2120 - 0731. Public reporting for this collection of information is estimated to be approximately 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, completing and reviewing the collection of information. All responses to this collection of information are voluntary. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden to the FAA at: Information Collection Clearance Officer, Federal Aviation Administration, 10101 Hillwood Parkway, Fort Worth, TX 7617 7-1524. For Further Information Contact Ramasamy Rangan, Aerospace Engineer, Fort Worth ACO Branch, 10101 Hillwood Parkway, Fort Worth, TX 76177; phone: (817) 222 -4126; email: ramasamy.rangan@faa.gov. Jacob Fitch, COS Program Manager, Operational Safet y Branch, 10101 Hillwood Parkway, Fort Worth, TX 76177; phone: (817) 222 -4130; email: jacob.fitch@faa.gov. For Related Service Information Contact Mooney International Corporation, 165 Al Mooney Road North, Kerrville, Texas 78028; phone: (800) 456-3033; email: support@mooney.com; website: www.mooney.com. ## Registered aircraft it may concern (OpenAirDocs) Registry models matched by make and model, the same way as ADs, most registered aircraft first. - [Mooney M20J](https://openairdocs.org/model/mooney-m20j): 1,408 registered aircraft (airframe model) - [Mooney M20C](https://openairdocs.org/model/mooney-m20c): 1,258 registered aircraft (airframe model) - [Mooney M20E](https://openairdocs.org/model/mooney-m20e): 829 registered aircraft (airframe model) - [Mooney M20K](https://openairdocs.org/model/mooney-m20k): 771 registered aircraft (airframe model) - [Mooney M20F](https://openairdocs.org/model/mooney-m20f): 721 registered aircraft (airframe model) - [Mooney M20R](https://openairdocs.org/model/mooney-m20r): 399 registered aircraft (airframe model) - [Mooney M20M](https://openairdocs.org/model/mooney-m20m): 249 registered aircraft (airframe model) - [Mooney M-20G](https://openairdocs.org/model/mooney-m-20g): 116 registered aircraft (airframe model) - [Mooney M20TN](https://openairdocs.org/model/mooney-m20tn): 107 registered aircraft (airframe model) - [Mooney M20B](https://openairdocs.org/model/mooney-m20b): 98 registered aircraft (airframe model) - [Mooney M20D](https://openairdocs.org/model/mooney-m20d): 88 registered aircraft (airframe model) - [Mooney M20A](https://openairdocs.org/model/mooney-m20a): 58 registered aircraft (airframe model) - [Mooney M20S](https://openairdocs.org/model/mooney-m20s): 58 registered aircraft (airframe model) - [Mooney M20](https://openairdocs.org/model/mooney-m20): 23 registered aircraft (airframe model) - [Mooney International M20V](https://openairdocs.org/model/mooney-international-m20v): 18 registered aircraft (airframe model) - [Mooney M20L](https://openairdocs.org/model/mooney-m20l): 16 registered aircraft (airframe model) - [Mooney International M20U](https://openairdocs.org/model/mooney-international-m20u): 13 registered aircraft (airframe model) - [Mooney International M20TN](https://openairdocs.org/model/mooney-international-m20tn): 12 registered aircraft (airframe model) - [Aerostar Acft Corp Of Texas M20E](https://openairdocs.org/model/aerostar-acft-corp-of-texas-m20e): 9 registered aircraft (airframe model) - [Aerostar Acft Corp Of Texas M20F](https://openairdocs.org/model/aerostar-acft-corp-of-texas-m20f): 8 registered aircraft (airframe model) - [Aerostar Acft Corp Of Texas M20C](https://openairdocs.org/model/aerostar-acft-corp-of-texas-m20c): 6 registered aircraft (airframe model) - [Mooney International M20R](https://openairdocs.org/model/mooney-international-m20r): 4 registered aircraft (airframe model) - [Aerostar Acft Corp Of Texas M20](https://openairdocs.org/model/aerostar-acft-corp-of-texas-m20): 0 registered aircraft (airframe model) - [Aerostar Acft Corp Of Texas M20A](https://openairdocs.org/model/aerostar-acft-corp-of-texas-m20a): 0 registered aircraft (airframe model) - [Aerostar Acft Corp Of Texas M20B](https://openairdocs.org/model/aerostar-acft-corp-of-texas-m20b): 0 registered aircraft (airframe model) - [Aerostar Acft Corp Of Texas M20D](https://openairdocs.org/model/aerostar-acft-corp-of-texas-m20d): 0 registered aircraft (airframe model) - [Aerostar Acft Corp Of Texas M20G](https://openairdocs.org/model/aerostar-acft-corp-of-texas-m20g): 0 registered aircraft (airframe model) --- 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.