AD 49-27-03

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AD Number:
49-27-03
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; DOUGLAS All Models C54-DC and DC-4 Series Aircraft
Subject:
Nose Gear Yoke End And Fittings
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
Make:
The Boeing Company
Model:
C54-DC | DC-4
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Superseded AD: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Superseded By: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: 49-27-03
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:  

AD NUMBER:   49-27-03

SUBJECT HEADING:   Airworthiness Directives; DOUGLAS All Models C54-DC and DC-4 Series Aircraft

ACTION:  

SUMMARY:  

DATES:  

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
49-27-03 DOUGLAS: Applies to All Models C54-DC and DC-4 Series Aircraft.

To be accomplished as indicated below:

1. Prior to 5,000 hours total airplane time, or at next scheduled inspection at which necessary facilities are available, on airplanes with more than 5,000 hours total time, inspect nose gear yoke and fittings, P/N 5087950 and either 5087951 or 5180402 to determine if the 1/2-inch radius fairs in properly with the journal. All parts having a poor radius condition must be replaced immediately with parts having the correct radius fairing into the journal. This inspection does not have to be repeated if already accomplished.

2. Parts having a good radius must be replaced at each 17,500 hours airplane operation time. If the replacement parts have been shotpeened, as per Douglas Aircraft Co. recommendations, the replacement time may be extended to 30,000 hours airplane operation time.

3. Unused parts having a poor radius may be used, after being reworked according to Douglas Aircraft Co. recommendations.

4. All used nose hear yoke end fittings having not more than 17,500 hours total time may be reinstalled and used for a total time of 30,000 hours if Zyglo inspection reveals no cracks; the radius of the journal is properly reworked to meet the limiting dimensions of Douglas E. C. 1361954 and the part is shotpeened in accordance with Douglas Aircraft Co. standards.

5. At the time of replacement of parts as per item 1, or at the next major aircraft overhaul period, rework bushing, P/N 1087938, to incorporate a 1/8-inch radius on the inside diameter at the flanged end of the bushing. Rework ring, P/N 2103390, by providing a 0.031-inch radius on the inside edges.

(Douglas Service Letters A-214-T.51/WBM dated January 7, 1948; A-214 TS2249/WBM dated November 25, 1947; and A-214-TS-1572/WBM dated October 20, 1947, cover the above.)

This supersedes AD 48-24-02.


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