AD 72-25-07

AD Final Rules - DRS_72-25-07.html
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AD Number:
72-25-07
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
MCCAULEY Models E2A34C64(-)/90AT-8 and E2A34C73(-)/90AT-8 Propellers
Subject:
Blades
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
12/13/1972
Make:
McCauley Propeller Systems
Model:
E2A34C
Product Type:
Propeller
Product Subtype:
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 72-25-07
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-1573

AD NUMBER:   72-25-07

SUBJECT HEADING:   MCCAULEY Models E2A34C64(-)/90AT-8 and E2A34C73(-)/90AT-8 Propellers

ACTION:  

SUMMARY:  

DATES:   Effective December 13, 1972.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
72-25-07 MCCAULEY: Amdt. 39-1573. Applies to the two-bladed constant speed series propeller Models E2A34C64(-)/90AT-8 and E2A34C73(-)/90AT-8 with the following blades and hubs installed on but not limited to the Cessna P206, A, B, C, D, E, and Cessna 210E, F, G, H, J, K, and L aircraft with Continental IO-520 series (normally aspirated) engines.

TABLE I - BLADE SERIAL NUMBERS
All Model 90AT-8 propeller blades with serial numbers not ending with suffix letter "S" (Example: C238479Y is affected while C238479YS would not be affected).

TABLE II - HUBS MODELS AND SERIAL NUMBERS
Serial Numbers 64000 thru 699999 for the following hubs:
E2A34C64 E2A34C73-A
E2A34C64-A E2A34C73-J
E2A34C73 E2A34C73-K

Compliance required as indicated, unless already accomplished.

To prevent possible blade and hub failures, accomplish the following:

a) Propellers with 775 or more total hours in service, must be reworked or replaced in accordance with paragraphs (d), and (e) or (f) as applicable within the next 25 hours in service after the effective date of this AD.

b) Propellers with less than 775 total hours in service must be reworked or replaced in accordance with paragraphs (d), and (e) or (f) as applicable prior to the accumulation of 800 total hours in service.

c) Propellers whose total hours in service are unknown will be assumed to have a total of 775 hours minimum and thus fall within the requirements for rework or replacement in accordance with paragraph (a).

d) Rework affected propeller blades in accordance with McCauley Service Bulletin 100 dated October 30, 1972, or replace with Model 90AT-8 blades to which this AD does not apply.

e) Rework affected Model E2A34C73(-) hubs in accordance with McCauley Service Bulletin 100 dated October 30, 1972, or replace with Model E2A34C73(-) hubs to which this AD does not apply.

f) Replace affected Model E2A34C64(-) hubs with Models E2A34C73(-) hubs to which this AD does not apply, or which have been reworked in accordance with McCauley Service Bulletin No. 100 dated October 30, 1972. (The spinner shell and bulkhead must be replaced when converting from the E2A34C64(-) to the E2A34C73(-) Model. A kit, Cessna P/N SK-210-45, is available for this purpose from the airplane manufacturer.)

(McCauley Bulletins No. 81 dated March 9, 1970, No. 87 dated November 6, 1970, No. 87-1 dated November 25, 1970, No. 87-2 dated April 21, 1971, No. 88 dated November 6, 1970, McCauley Service Manual 720415 and Cessna Service Letter No. 65-68 dated July 13, 1965, also pertains to this subject.)

This amendment becomes effective December 13, 1972.

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