AD 57-02-01

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AD Number:
57-02-01
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; FORNEY (ERCOUPE) All Models 415-C, -CD, -D, E, G and F-1 Aircraft
Subject:
Rudder horn attachment
Status:
Current
Citation:
This information is not available
Citation Publish Date:
01/01/1957
Effective Date:
Make:
Univair Aircraft Corporation
Model:
415-C | 415-CD | 415-D | F-1 | 415-E | 415-G
Product Type:
Aircraft
Product Subtype:
Small Airplane
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
AIR-700: Compliance & Airworthiness Division
Office of Primary Responsibility:
AIR-770: West Certification Branch
CFR Part Reference:
Part 39
Comments:
Unable to locate 57-02-01 in archived Federal Register publications to find publish/issue date. Input 01/01/1957 as dates are required field to make e... ...Show more
AIRWORTHINESS DIRECTIVES FINAL RULES: 57-02-01
CITATION:   This information is not available

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:  

AD NUMBER:   57-02-01

SUBJECT HEADING:   Airworthiness Directives; FORNEY (ERCOUPE) All Models 415-C, -CD, -D, E, G and F-1 Aircraft

ACTION:  

SUMMARY:  

DATES:  

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:   57-02-01 FORNEY (ERCOUPE): Applies to All Models 415-C, -CD, -D, E, G and F-1 Aircraft.
Compliance required at every 100 hours.
There have been several failures of the rudder horn attachments. Experience has indicated that these failures are attributed to improper ground handling technique rather than to unusual flight loads. The design of the aircraft has placed the fins and rudders at the height which owners and operators have found convenient for pushing or pulling with their hands when moving the airplane in and out of hangers and along the ground. Such handling tactics will subject the surfaces to higher loads than those for which they are designed and should be avoided. The following inspection would be made and corrective action taken when necessary.
A load of 10 pounds should be applied to the trailing edge of the rudder while the controls are locked in neutral position. The trailing edge should not deflect more than one-half inch, nor should there be evidence of a clicking noise occurring in the vicinity of the center rudder hinge when the rudder is deflected. If the deflection exceeds 1/2 inch, the control system should be checked to establish that the deflection is in the rudder. Once the deflection has been established as in the rudder or if a clicking noise is heard even though the deflection was less than 1/2 inch, the rudder should be removed and the main spar inspected for cracks. The outboard skin should also be removed sufficiently to inspect the rudder horn attaching structure and the roots of the rudder ribs for cracks or damage. Any parts found cracked or deformed should be replaced.
(Except for the cracked rudder ribs, Ercoupe Service Bulletin No. 25, dated July 31, 1953, covers this same subject.)
This supersedes AD 53-26-02.

FOOTER: