# AD 78-22-05: Elevator Control Push Rods - Type: Airworthiness directive - Status: Current - Products: Textron 100, 50, 65, 65-80, 65-88, 65-90, 65-A80, 65-A80-8800, 65-A90, 65-B80, 70, 99 and 22 more - Effective: November 6, 1978 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Small airplane - Amendment: 39-3329 - Registered aircraft: 751 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9DA6084BBB56A03086256A080073A66D.0001 - DRS record last changed: January 21, 2026 - Page: https://openairdocs.org/ad/78-22-05 ## The airworthiness directive 78-22-05 BEECH: Amendment 39-3329. Applies to the following models and serial number airplanes, certificated in all categories: MODEL SERIAL NUMBERS 50 H-1 through H-11 B50, C50 CH-12 through CH-360 D50, D50A, D50B, D50C and D50E DH-1 through DH-347 E50 EH-1 through EH-70 F50 FH-71 through FH-93, FH-95, FH-96 G50 GH-94, GH-97 through GH-119 H50 HH-120 through HH-149 J50 JH-150 through JH-176 65, A65, A65-8200 L-1, L-2, L-6, LF-7, LF-8, LC-1 through LC-335 70 LB-1 through LB-35 65-80, 65-A80, 65-A80-8800, 65-B80 LD-1 through LD-511 65-88 LP-1 through LP-28, LP-30 through LP-47 65-90, 65-A90, B90, C90 LJ-1 through LJ-797 E90 LW-1 through LW-297 99, 99A, A99A, B99 U-1 through U-164 100, A100 B-1 through B-247 B100 BE-1 through BE-55 COMPLIANCE: Required as indicated unless already accomplished. To prevent partial loss of elevator control due to possible failure of elevator control push rods, in accordance with instructions set forth herein and in Beechcraft Service Instructions No. 0334-152, Revision III, or later approved revisions, accomplish the following: A) On the following airplanes: MODEL SERIAL NUMBERS 50 H-1 through H-11 B50, C50 CH-12 through CH-360 D50, D50A, D50B, D50C and D50E DH-1 through DH-347 E50 EH-1 through EH-70 F50 FH-71 through FH-93, FH-95, FH-96 G50 GH-94, GH-97 through GH-119 H50 HH-120 through HH-149 J50 JH-150 through JH-176 65, A65, A65-8200 L-1, L-2, L-6, LF-7, LF-8, LC-1 through LC-335 70 LB-1 through LB-35 65-80, 65-A80, 65-A80-8800 and 65-B80 LD-1 through LD-511 65-88 LP-1 through LP-28 and LP-30 through LP-47 65-90, 65-A90, B90 and C90 LJ-1 through LJ-716 E90 LW-1 through LW-222 99, 99A, A99A and B99 U-1 through U-164 100, A100 B-1 through B-233 B100 BE-1 through BE-23 Upon the accumulation of 1,050 hours total time-in-service for airplanes with less than 1,000 hours total time-in-service on the effective date of this AD,or Within 50 hours time-in-service after the effective date of this AD, for airplanes with more than 1,000 hours total time-in-service on the effective date of this AD, that have not complied with AD 70-18-02, or Within 500 hours time-in-service after the last inspection in accordance with AD 70-18- 02, for airplanes with more than 1,000 hours total time-in-service that have complied with AD 70-18-02: 1. Review the airplane maintenance records for entries showing that Beechcraft Service Instructions No. 0334-152, Revision II, has been complied with. If Revision II of the Service Instructions has not been complied with, accomplish Paragraph A)2 of this AD. If Revision II of the Service Instructions has been complied with, accomplish Paragraph A)3 of this AD within an additional 100 hours time-in-service after this finding. 2. Gain access to the elevator control push rods (reference Figures I and II of this AD) and visually inspect for the words "CORROSION PROOFED"ink stamped near the center of the rods. If the words "CORROSION PROOFED" are ink stamped on a rod, no further action on that rod is required by this AD. If the words "CORROSION PROOFED" are not ink stamped on the rods, remove the elevator control push rods, clean, dye penetrant and visually inspect, check for bows, apply corrosion preventative treatment, identify and reinstall, all in accordance with Part I of Beechcraft Service Instructions No. 0334-152, Revision III, or later approved revisions. 3. Gain access to the elevator control push rods (reference Figures I and II of this AD) and visually inspect for the words "CORROSION PROOFED" ink stamped near the center of each rod. If the words "CORROSION PROOFED" are ink stamped on a rod, then no further action on that rod is required by this AD. If the words "CORROSION PROOFED" are not ink stamped on any rod and new rods were not installed during compliance with Revision II of the Service Instructions, paint a black stripe around the center of each rod in accordance with Part II of Beechcraft Service Instructions No. 0334-152, Revision III, or later approved revisions. If any new rods were installed during compliance with Revision II of the Service Instructions and the new rods are not ink stamped "CORROSION PROOFED", on each new rod so installed, remove the elevator control push rod, disassemble, inspect for corrosion preventative treatment and alignment, and if not found accomplished, apply the corrosion preventative treatment, identify, reassemble and reinstall, all in accordance with Part III of Beechcraft Service Instructions No. 0334-152, Revision III, or later approved revisions. B) On the following airplanes: MODEL SERIAL NUMBERS C90 LJ-717 through LJ-797 E90 LW-223 through LW-297 A100 B-234 through B-247 B100 BE-24 through BE-55 Within 100 hours time-in-service after the effective date of this AD: 1. Gain access to the elevator control push rods (reference Figures Iand II of this AD) and visually inspect for the words "CORROSION PROOFED" ink stamped near the center of the rods. If the words "CORROSION PROOFED" are ink stamped on a rod, no further action on that rod is required by this AD. If the words "CORROSION PROOFED" are not ink stamped on the rods, remove the elevator control push rod tubes, disassemble, inspect for corrosion preventative treatment and alignment, and if not found accomplished, apply the corrosion preventative treatment, identify, reassemble and reinstall, all in accordance with Part III of Beechcraft Service Instructions No. 0334-152, Revision III, or later approved revisions. C) On all airplanes affected by this AD, replace any elevator control push rods found cracked or otherwise unserviceable during any inspection required by this AD with serviceable rods that comply with the requirements of this AD prior to returning the airplane to service. D) Any equivalent means of compliance with this AD must be approvedby the Chief, Engineering and Manufacturing Branch, FAA, Central Region. This AD supersedes AD 70-18-02, Amendment 39-907 (35 FR 305) as amended by Amendments 39-1074 (35 FR 13722 and 13723) and 39-1879 (39 FR 21120). This amendment becomes effective November 6, 1978. ## Affected data sheets (3) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS 3A20](https://openairdocs.org/tcds/3A20): Textron Aviation Inc.; names 14 of 22 models: B90, 65-A80-8800, 65-B80, 65-A80, 65, A65-8200, E90, 65-88… - [TCDS 5A4](https://openairdocs.org/tcds/5A4): Textron Aviation Inc.; names 13 of 14 models: J50, D50B, D50, E50, B50, D50E, C50, G50… - [TCDS A14CE](https://openairdocs.org/tcds/A14CE): Textron Aviation Inc.; names 7 of 12 models: A99A, B99, B100, A100, 100, 99A, 99 ## 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: 751 (751 by airframe model, 0 by engine model) - Makers: Beech 746, Beech/Bond 2, Monocoupe 1, Raytheon 1, Rockwell International 1 Models with the most aircraft: - [Beech C90](https://openairdocs.org/model/beech-c90): 216 aircraft (airframe model) - [Beech E-90](https://openairdocs.org/model/beech-e-90): 145 aircraft (airframe model) - [Beech B100](https://openairdocs.org/model/beech-b100): 58 aircraft (airframe model) - [Beech 65-A90](https://openairdocs.org/model/beech-65-a90): 34 aircraft (airframe model) - [Beech B90](https://openairdocs.org/model/beech-b90): 29 aircraft (airframe model) - [Beech 99](https://openairdocs.org/model/beech-99): 23 aircraft (airframe model) - [Beech 65](https://openairdocs.org/model/beech-65): 22 aircraft (airframe model) - [Beech D-50](https://openairdocs.org/model/beech-d-50): 21 aircraft (airframe model) - [Beech C-50](https://openairdocs.org/model/beech-c-50): 20 aircraft (airframe model) - [Beech D50E](https://openairdocs.org/model/beech-d50e): 18 aircraft (airframe model) - [Beech D50C](https://openairdocs.org/model/beech-d50c): 16 aircraft (airframe model) - [Beech 65-B80](https://openairdocs.org/model/beech-65-b80): 15 aircraft (airframe model) - [Beech A100](https://openairdocs.org/model/beech-a100): 15 aircraft (airframe model) - [Beech 100](https://openairdocs.org/model/beech-100): 14 aircraft (airframe model) - [Beech B50](https://openairdocs.org/model/beech-b50): 13 aircraft (airframe model) - [Beech E50](https://openairdocs.org/model/beech-e50): 11 aircraft (airframe model) - [Beech 99A](https://openairdocs.org/model/beech-99a): 11 aircraft (airframe model) - [Beech 65-90](https://openairdocs.org/model/beech-65-90): 7 aircraft (airframe model) - [Beech A65](https://openairdocs.org/model/beech-a65): 6 aircraft (airframe model) - [Beech 65 (LF-23F)](https://openairdocs.org/model/beech-65-lf-23f): 6 aircraft (airframe model) All 39 models: https://openairdocs.org/ad/78-22-05/models.md Every aircraft: https://openairdocs.org/ad/78-22-05/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.