AD 80-15-06

final rule

Airworthiness Directives; Cessna Model 404 Airplanes

AD Number
80-15-06
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Unknown
FR Citation
This information is not available.
Technical illustration of an aircraft flight control surface and actuator
Problem area Flight controls

Applicability

TypeManufacturerModelDetails
aircraft Cessna Aircraft Company 404 Airworthiness Directives; Cessna Model 404 Airplanes

Unsafe Condition

Failure of the elevator trim tab actuator screw assemblies could result in loss of elevator trim control.

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Replace both left and right elevator trim tab actuator screw assemblies with new ones within 25 hours time-in-service after the effective date and every 150 hours thereafter. Install a decal restricting engine RPM to 1750 and update the AFM. Check or replace elevator trim tab pushrod alignment on serial numbers 404-0001 through 404-0613 within 25 hours. Modify horizontal stabilizer by April 1, 1981, to void paragraphs A-C.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Within the next 25 hours time-in-service after the effective date of this AD and each 150 hours time-in-service thereafter for paragraph A; within the next 25 hours time-in-service after the effective date for paragraphs B and C; on or before April 1, 1981 for paragraph D.

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

Cessna Model 404 airplanes with serial numbers 404-0001 thru 404-0637.

AI-generated summary from the source AD text. Verify against the official source before acting.

Federal Register Abstract

Elevator Trim Tab Assembly

Applicability Source Text

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Details
AD Number:
80-15-06
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; Cessna Model 404 Airplanes
Subject:
Elevator Trim Tab Assembly
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
07/24/1980
Make:
Cessna Aircraft Company
Model:
404
Product Type:
Aircraft
Product Subtype:
Small Airplane
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 80-15-06
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-3847

AD NUMBER:   80-15-06

SUBJECT HEADING:   Airworthiness Directives; Cessna Model 404 Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective July 24, 1980.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
80-15-06 CESSNA: Amendment 39-3847. Applies to Model 404 (Serial Numbers 404-0001 thru 404-0637) airplanes.

COMPLIANCE: Required as indicated, unless already accomplished.

To ensure the structural integrity of the elevator trim tab actuator screw assemblies accomplish the following in accordance with the provisions of Cessna Multi-engine Customer Care Service Information Letter ME80-2, Revision 2, dated March 14, 1980, and Revision 3, dated June 20, 1980, as applicable:

A) On all airplanes with 150 hours or more time-in-service, or upon reaching 150 hours time-in-service, within the next 25 hours time-in-service after the effective date of this AD and each 150 hours time-in-service thereafter, replace both left and right elevator trim tab actuator screw assemblies with new screw assemblies of the same part number.

B) Within the next 25 hours time-in-service after the effective date of this AD, install a decal on the tachometer which restricts the lower edge of the normal engine operating range to 1750 RPM and operate the airplane in accordance with this limitation. Insert a copy of this paragraph in the "Limitations" section of the Airplane Flight Manual to reflect this temporary restriction.

C) On Serial Numbers 404-0001 through 404-0613 airplanes, within the next 25 hours time-in-service after the effective date of this AD:

1) Disconnect the aft end of Cessna P/N 5815160-1 pushrod from the trim tab horn and check the elevator trim tab pushrod for inboard/outboard alignment at the pushrod attachment to the elevator trim tab horn for both left and right hand trim tabs. If the misalignment does not exceed .12 inch, reconnect the pushrod and return the airplane to service.

2) If the Cessna P/N 5815160-1 pushrod has to be forced more than .12 inches inboard/outboard to align with the trim tab actuator bracket, replace it with a new part of the same part number and return the airplane to service.

D) On or before April 1, 1981, modify the horizontal stabilizer in accordance with Cessna Service Information Letter ME80-2, Revision 3, dated June 20, 1980, and Cessna Service Kit SK404-31. After installation of Cessna Service Kit SK404-31, the requirements of paragraphs A, B and C of this AD are no longer applicable.

E) Aircraft may be flown in accordance with Federal Aviation Regulation 21.197 to a location where the provisions of this AD can be accomplished.

F) Any equivalent method of compliance with this AD must be approved by the Chief, Aircraft Certification Program, Federal Aviation Administration, Room 238, Terminal Building No. 2299, Mid-Continent Airport, Wichita, Kansas 67209, telephone (316) 942-4285.

This AD supersedes AD 80-07-08, Amendment 39-3727.

This amendment becomes effective July 24, 1980.

FOOTER:

Document Text

Show stored source text (verify against official source)
AD Final Rules - DRS_80-15-06.html
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Print/Save as PDF
Document Versions
 Feedback
Details
AD Number:
80-15-06
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; Cessna Model 404 Airplanes
Subject:
Elevator Trim Tab Assembly
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
07/24/1980
Make:
Cessna Aircraft Company
Model:
404
Product Type:
Aircraft
Product Subtype:
Small Airplane
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 80-15-06
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-3847

AD NUMBER:   80-15-06

SUBJECT HEADING:   Airworthiness Directives; Cessna Model 404 Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective July 24, 1980.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
80-15-06 CESSNA: Amendment 39-3847. Applies to Model 404 (Serial Numbers 404-0001 thru 404-0637) airplanes.

COMPLIANCE: Required as indicated, unless already accomplished.

To ensure the structural integrity of the elevator trim tab actuator screw assemblies accomplish the following in accordance with the provisions of Cessna Multi-engine Customer Care Service Information Letter ME80-2, Revision 2, dated March 14, 1980, and Revision 3, dated June 20, 1980, as applicable:

A) On all airplanes with 150 hours or more time-in-service, or upon reaching 150 hours time-in-service, within the next 25 hours time-in-service after the effective date of this AD and each 150 hours time-in-service thereafter, replace both left and right elevator trim tab actuator screw assemblies with new screw assemblies of the same part number.

B) Within the next 25 hours time-in-service after the effective date of this AD, install a decal on the tachometer which restricts the lower edge of the normal engine operating range to 1750 RPM and operate the airplane in accordance with this limitation. Insert a copy of this paragraph in the "Limitations" section of the Airplane Flight Manual to reflect this temporary restriction.

C) On Serial Numbers 404-0001 through 404-0613 airplanes, within the next 25 hours time-in-service after the effective date of this AD:

1) Disconnect the aft end of Cessna P/N 5815160-1 pushrod from the trim tab horn and check the elevator trim tab pushrod for inboard/outboard alignment at the pushrod attachment to the elevator trim tab horn for both left and right hand trim tabs. If the misalignment does not exceed .12 inch, reconnect the pushrod and return the airplane to service.

2) If the Cessna P/N 5815160-1 pushrod has to be forced more than .12 inches inboard/outboard to align with the trim tab actuator bracket, replace it with a new part of the same part number and return the airplane to service.

D) On or before April 1, 1981, modify the horizontal stabilizer in accordance with Cessna Service Information Letter ME80-2, Revision 3, dated June 20, 1980, and Cessna Service Kit SK404-31. After installation of Cessna Service Kit SK404-31, the requirements of paragraphs A, B and C of this AD are no longer applicable.

E) Aircraft may be flown in accordance with Federal Aviation Regulation 21.197 to a location where the provisions of this AD can be accomplished.

F) Any equivalent method of compliance with this AD must be approved by the Chief, Aircraft Certification Program, Federal Aviation Administration, Room 238, Terminal Building No. 2299, Mid-Continent Airport, Wichita, Kansas 67209, telephone (316) 942-4285.

This AD supersedes AD 80-07-08, Amendment 39-3727.

This amendment becomes effective July 24, 1980.

FOOTER:

Source: Official FAA Source ↗

Retrieved: Apr 8, 2026

Rights: U.S. Government Public Domain

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