AD 69-19-06

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AD Number:
69-19-06
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; GENERAL DYNAMICS Models 22 and 22M Aircraft
Subject:
Landing Gear Axle Beam
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
10/18/1969
Make:
D & R Nevada LLC
Model:
22 | 22M
Product Type:
Aircraft
Product Subtype:
Large 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Superseded AD: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Superseded By: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: 69-19-06
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-842

AD NUMBER:   69-19-06

SUBJECT HEADING:   Airworthiness Directives; GENERAL DYNAMICS Models 22 and 22M Aircraft

ACTION:  

SUMMARY:  

DATES:   Effective October 18, 1969.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:   69-19-06 GENERAL DYNAMICS: Amdt. 39-842. Applies to all Model 22 Aircraft equipped with axle beam P/N 9729-68-1 and Model 22M Aircraft equipped with axle beam P/N 1057-68-1.

Compliance required within the next 2000 hours' time in service after the effective date of this AD or before the accumulation of 9000 hours' total time in service, whichever occurs later, unless already accomplished.

Several failures of the main landing gear axle beam have been attributed to cracks originating near the center jack pad on the beam lower surface. The crack then progresses upward until complete failure of the beam occurs at a point above the axle beam pivot pin. The initial crack in the beam develops due to stress corrosion or hydrogen embrittlement. To prevent further failures of this nature, accomplish the following or an equivalent approved by the Chief, Aircraft Engineering Division, FAA Western Region.

(a) Inspect and rework each Model 22 Aircraft axle beam assembly P/N 9729-68-1 in accordance with General Dynamics/Convair 880 Service Bulletin Number 32-87, dated February 7, 1966, (or later FAA approved revision), and each Model 22M Aircraft axle beam assembly P/N 1057-68-1 in accordance with General Dynamics/Convair 880M Service Bulletin Number 32-56, dated February 7, 1966, (or later FAA approved revision).

(b) Removal of beam material extending below .006 inch depth from the original beam surface will require individual evaluation by the Chief, Aircraft Engineering Division, FAA Western Region.

This amendment becomes effective October 18, 1969.

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