# AD 93-03-02: Loran Receiver System - Type: Airworthiness directive - Status: Current - Products: Textron 58, A36, B36TC and F33A - Effective: March 12, 1993 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Small airplane - Amendment: 39-8501 - Docket: 93-CE-09-AD - Registered aircraft: 4,555 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/BBFA5BB8368598FA86256A09005CB370.0001 - DRS record last changed: January 21, 2026 - Page: https://openairdocs.org/ad/93-03-02 ## The airworthiness directive 93-03-02 BEECH AIRCRAFT CORPORATION: Amendment 39-8501; Docket No. 93-CE-09-AD. Applicability: The following model and serial number airplanes equipped with a Bendix/King KLN-88 Loran receiver system, certificated in any category: Models Serial Numbers F33A CE-1620, CE-1640, CE-1655, CE-1659, CE-1662, CE-1680, CE-1682, and CE-1693 A36 E-2563, E-2564, E-2575, E-2582, E-2599, E-2604, E-2614, E-2631, E-2633, E-2643, E-2645, E-2650, E-2660, E-2664, E-2673, E-2675, E-2680, E-2681, E-2688, E-2690, E-2693, E-2695, E-2698, E-2711, E-2727, E-2728, E-2737, E-2738, E-2743, E-2746, and E-2752. B36TC EA-515, EA-516, EA-519, EA-522, EA-524, and EA-529. 58 TH-1581, TH-1588, TH-1592, TH-1597, TH-1598, TH-1599, TH-1600, TH-1602, TH-1612, TH-1616, TH-1621, TH-1623, TH-1627, TH-1628, TH-1632, TH-1633, TH-1640, TH-1642, TH-1646, TH-1650, TH-1651, TH-1653, TH-1661, TH-1663, TH-1668, TH-1672, and TH-1673. Compliance: Required within the next 50 hourstime-in-service after the effective date of this AD, unless already accomplished. To prevent the display of a Loran lateral deviation signal when the instrument landing system localizer frequency is selected, which could result in navigational errors, accomplish the following: (a) Modify the wiring configuration of the switching system between the Bendix/King KLN-88 Loran receiver system and the instrument landing system localizer in accordance with the ACCOMPLISHMENT INSTRUCTIONS section of Beech Service Bulletin No. 2496, dated January 1993. (b) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the airplane to a location where the requirements of this AD can be accomplished. (c) An alternative method of compliance or adjustment of the compliance time that provides an equivalent level of safety may be approved by the Manager, Wichita Aircraft Certification Office, FAA, 1801 Airport Road, Room 100, Wichita, Kansas 67209. The request shall be forwarded through an appropriate FAA Maintenance Inspector, who may add comments and send it to the Manager, Wichita Aircraft Certification Office. NOTE: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Wichita Aircraft Certification Office. (d) The modification required by this AD shall be done in accordance with Beech Service Bulletin No. 2496, dated January 1993. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51. Copies may be obtained from the Beech Aircraft Corporation, P.O. Box 85, Wichita, Kansas 67201-0085. Copies may be inspected at the FAA, Central Region, Office of the Assistant Chief Counsel, Room 1558, 601 E. 12th Street, Kansas City, Missouri, or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. (e) This amendment (39-8501) becomes effective on March 12, 1993. ## Affected data sheets (2) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS 3A15](https://openairdocs.org/tcds/3A15): Textron Aviation Inc.; names 3 of 27 models: B36TC, A36, F33A - [TCDS 3A16](https://openairdocs.org/tcds/3A16): Textron Aviation Inc.; names 1 of 21 models: 58 ## 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: 4,555 (4,555 by airframe model, 0 by engine model) - Makers: Beech 3,836, Raytheon 718, Beech/Goedkerj L 1 Models with the most aircraft: - [Beech A36](https://openairdocs.org/model/beech-a36): 1,907 aircraft (airframe model) - [Beech F33A](https://openairdocs.org/model/beech-f33a): 978 aircraft (airframe model) - [Beech 58](https://openairdocs.org/model/beech-58): 726 aircraft (airframe model) - [Raytheon A36](https://openairdocs.org/model/raytheon-a36): 448 aircraft (airframe model) - [Beech B36TC](https://openairdocs.org/model/beech-b36tc): 225 aircraft (airframe model) - [Raytheon 58](https://openairdocs.org/model/raytheon-58): 188 aircraft (airframe model) - [Raytheon B36TC](https://openairdocs.org/model/raytheon-b36tc): 82 aircraft (airframe model) - [Beech/Goedkerj L A36](https://openairdocs.org/model/beech-goedkerj-l-a36): 1 aircraft (airframe model) All 10 models: https://openairdocs.org/ad/93-03-02/models.md Every aircraft: https://openairdocs.org/ad/93-03-02/aircraft.md Its text cites no advisory circulars or STCs. --- 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.