AD 63-24-04

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AD Number:
63-24-04
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; VERTOL Model 107-II Helicopters
Subject:
Quill Shafts And Collector Gears
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
11/27/1963
Make:
Columbia Helicopters, Inc.
Model:
107-II
Product Type:
Aircraft
Product Subtype:
Rotorcraft
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 63-24-04
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:  

AD NUMBER:   63-24-04

SUBJECT HEADING:   Airworthiness Directives; VERTOL Model 107-II Helicopters

ACTION:  

SUMMARY:  

DATES:   Effective November 27, 1963.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
63-24-04 VERTOL: Amdt. 648 Part 507 Federal Register November 27, 1963. Applies to All Model 107-II Helicopters, Serial Numbers 2 and Up.

Compliance required before further flight and every 120 hours' time in service thereafter, except that compliance for spare mix and aft transmission assemblies shall be prior to installation on certificated aircraft.

As a result of a fatigue failure of the aft rotor transmission quill shaft, P/N 107D2067-1, accomplish the following:

(a) Remove aft transmission assembly P/N 107D2010, separate mix box P/N 107D2003 and inspect the mix box and aft transmission in accordance with Vertol Service Bulletin No. 107-113 dated October 28, 1963. Mix box or aft transmission assemblies which exceed the envelope of tolerances established in Figure 2 of Vertol Service Bulletin No. 107-113 dated October 28, 1963, shall be replaced before further flight.

(b) Remove the quill shaft in accordance with the 107-5 Overhaul Manual, Chapter 62-10-2.

(1) Retire from service all quill shafts P/N 107D2067-1 with a total time in service of 120 hours or more.

(2) Quill shafts with less than 120 hours' total time in service may be continued in service until the accumulation of 120 hours provided the shafts satisfactorily pass the inspection specified in Vertol Service Bulletin No. 107-113 dated October 28, 1963. Replace before further flight quill shafts which are cracked or which have a wear step on the flank of the spline.

(c) Inspect the internal splines of the input pinion and collector gears for wear. Replace before further flight gears which have a wear step on the flank of the spline.

(d) Inspect holes in oil jets P/N 107D2268-1 and P/N 107D2214-1 to determine that they are free and clear.

(e) As an alternative means of compliance with this directive, the following may be accomplished:

(1) Install the tapered gasket seal type shim, P/N 107DS218-3 between the mixbox and aft transmission in place of the existing gasket seal, and replace the aft transmission mounting lug bushings with new eccentric type bushings in accordance with Vertol Service Bulletin No. 107-182 dated October 7, 1964.

(2) Modify the aft transmission lower case for new quill shaft lubrication in accordance with Part II of Vertol Service Bulletin NO. 107-182. This involves discarding the P/N 107D2214-1 plug jet, adding two higher capacity screened type jets and altering the P/N 107D2268-1 oil jet.

(3) During reassembly of the transmission following the rework described in (1) and (2), the gear box inspections specified in Parts I and II of Vertol Service Bulletin No. 107- 182 shall be accomplished. These inspections shall include quill shaft lubrication inspection, gear box oil flow check, bearing pre-load, and back lash check, and gear box mating surface and pilot diameter dial indicator check. Quill shafts which have accumulated prior service time up to a maximum of 120 hours, may be installed for further service after a magnaglo and wear inspection in accordance with Vertol Service Bulletin No. 107-182.

(4) Reidentify the aft transmission assembly, sub assemblies, and components in accordance with Part II of Vertol Service Bulletin No. 107-182.

(f) Upon completion of all modifications and reidentification of gearbox units as described in (e), the 120-hour quill shaft retirement life and repetitive inspections required by (a), (b), (c), and (d) of this AD are no longer required.

(Vertol Service Bulletin No. 107-113 dated October 28, 1963, and NO. 107-113A dated November 22, 1963, cover (a), (b), (c), and (d) of this AD. Vertol Service Bulletin No. 107-182 dated October 7, 1964, covers (e)).

This directive effective upon publication in the Federal Register to all persons except those to whom it was made effective immediately by telegram dated November 1, 1963.

Revised October 15, 1964.

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