# SAIB CE-15-22: Wing Leading Edge Hinge-Pin Corrosion - Type: Special airworthiness information bulletin (advisory, not mandatory) - Status: Current - Revision: 0 - Issued: September 15, 2015 - Products: Beechcraft 35-33, 35-A33, 35-B33, 35-C33, 35-C33A, 36, 58, A36, A36TC, B36TC, D55, E33 and 10 more - Product type: Aircraft, Small Airplane - PDF: https://openairdocs.org/files/sha256/23/15/231505813eca46c6fa885df581b1f2eb0c6b864291866395a3a21f5ef595dec9 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9A7573CE0EC85AAA86257EC1006B8639.0001 - DRS record last changed: September 15, 2015 - Page: https://openairdocs.org/saib/CE-15-22 ## Text FAA Aviation Safety **SPECIAL AIRWORTHINESS** INFORMATION BULLETIN SUBJ: Wing Leading Edge Hinge-Pin Corrosion SAIB: CE-15-22 Date: September 15, 2015 This is information only. Recommendations aren’t mandatory. Introduction This Special Airworthiness Information Bulletin (SAIB) informs owners, operators, and maintenance personnel of Beechcraft Corporation (Beechcraft) Debonair, Bonanza, and Baron Series airplanes, of an airworthiness concern, specifically the potential for corrosion on the wing leading edge hinge-pin. Based on information gathered to date, the corrosion appears to be caused by deicing fluid accumulating in the area of the wing leading edge hinge pin. Specific models are 35-33, 35- A33, 35-B33, 35-C33, 35-C33A, E33, E33A, F33, F33A, G33, 36, A36, G36, A36TC, B36TC, S35, V35 and V35B B55, C55, D55, E55 and 58 airplanes. At this time, it has been determined that 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 (Wichita Aircraft Certification Office (ACO)) investigated two reports of an extensive corrosion problem along the front spar leading edge lower hinge-pin attachment on two Beechcraft Model G36 airplanes. The Beechcraft Model G36 design allows for the installation of either a corrosion resistant steel hinge pin or an alternative high carbon steel hinge pin. The two Beechcraft Model G36 airplanes, which were the subject of the original reports, both used the alternative high carbon steel material. Following the original report, 10 other aircraft have been discovered to have similar corrosion issues. Multiple Beechcraft Bonanzas and Barons have been affected. Recommendations We recommend that the front spar leading edge lower hinge-pin area be inspected for corrosion on all Debonair, Bonanza, and Baron Series airplanes with the described configuration. This inspection may be done during regularly scheduled yearly inspections. During the annual inspection, we recommend you view the lower hinge and pin while the under wing access panels have been removed. If corrosion is found, you should contact Beechcraft Customer Support at 1-800-429-5372 or 316-676-3140 for further instruction. See figure 1 for inspection location. Figure 1: Inspection location For Further Information Contact Mark Watson, Aerospace Engineer, FAA Wichita ACO, 1801 Airport Road, Room 100, Wichita, KS 67209, telephone: (316) 946-4155, fax: (316) 946-4129, e-mail: mark.watson@faa.gov. ## Registered aircraft it may concern (OpenAirDocs) Registry models matched by make and model, the same way as ADs, most registered aircraft first. - [Beech A36](https://openairdocs.org/model/beech-a36): 1,907 registered aircraft (airframe model) - [Beech F33A](https://openairdocs.org/model/beech-f33a): 978 registered aircraft (airframe model) - [Beech V35B](https://openairdocs.org/model/beech-v35b): 913 registered aircraft (airframe model) - [Beech 58](https://openairdocs.org/model/beech-58): 726 registered aircraft (airframe model) - [Beech S35](https://openairdocs.org/model/beech-s35): 459 registered aircraft (airframe model) - [Raytheon A36](https://openairdocs.org/model/raytheon-a36): 448 registered aircraft (airframe model) - [Beech V35](https://openairdocs.org/model/beech-v35): 425 registered aircraft (airframe model) - [Beech 35-B33](https://openairdocs.org/model/beech-35-b33): 291 registered aircraft (airframe model) - [Beech B36TC](https://openairdocs.org/model/beech-b36tc): 225 registered aircraft (airframe model) - [Beech E-55](https://openairdocs.org/model/beech-e-55): 215 registered aircraft (airframe model) - [Raytheon 58](https://openairdocs.org/model/raytheon-58): 188 registered aircraft (airframe model) - [Beech 35-C33](https://openairdocs.org/model/beech-35-c33): 185 registered aircraft (airframe model) - [Beech A36TC](https://openairdocs.org/model/beech-a36tc): 174 registered aircraft (airframe model) - [Hawker Beechcraft G36](https://openairdocs.org/model/hawker-beechcraft-g36): 146 registered aircraft (airframe model) - [Beech 35-33](https://openairdocs.org/model/beech-35-33): 130 registered aircraft (airframe model) - [Beech D55](https://openairdocs.org/model/beech-d55): 119 registered aircraft (airframe model) - [Beech 35-C33A](https://openairdocs.org/model/beech-35-c33a): 113 registered aircraft (airframe model) - [Beech 36](https://openairdocs.org/model/beech-36): 111 registered aircraft (airframe model) - [Raytheon G36](https://openairdocs.org/model/raytheon-g36): 97 registered aircraft (airframe model) - [Beech 35-A33](https://openairdocs.org/model/beech-35-a33): 85 registered aircraft (airframe model) - [Textron G36](https://openairdocs.org/model/textron-g36): 84 registered aircraft (airframe model) - [Raytheon B36TC](https://openairdocs.org/model/raytheon-b36tc): 82 registered aircraft (airframe model) - [Beech E33](https://openairdocs.org/model/beech-e33): 63 registered aircraft (airframe model) - [Beechcraft G36](https://openairdocs.org/model/beechcraft-g36): 53 registered aircraft (airframe model) - [Beech E33A](https://openairdocs.org/model/beech-e33a): 51 registered aircraft (airframe model) - [Beech G33](https://openairdocs.org/model/beech-g33): 41 registered aircraft (airframe model) - [Beech E33C](https://openairdocs.org/model/beech-e33c): 22 registered aircraft (airframe model) - [Beech F33](https://openairdocs.org/model/beech-f33): 14 registered aircraft (airframe model) - [Beech/Goedkerj L A36](https://openairdocs.org/model/beech-goedkerj-l-a36): 1 registered aircraft (airframe model) - [Beechcraft BONANZA A36](https://openairdocs.org/model/beechcraft-bonanza-a36): 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.