Airworthiness Directives; Hartzell Propeller Inc., Model HC-C2YR-4CF Propellers

[Federal Register Volume 68, Number 23 (Tuesday, February 4, 2003)]
[Rules and Regulations]
[Pages 5541-5542]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 03-2464]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 2001-NE-48-AD; Amendment 39-13045; AD 2003-03-20]
RIN 2120-AA64


Airworthiness Directives; Hartzell Propeller Inc., Model HC-C2YR-
4CF Propellers

AGENCY: Federal Aviation Administration, DOT.

ACTION: Final rule.

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SUMMARY: This amendment adopts a new airworthiness directive (AD), that 
is applicable to Hartzell Propeller Inc. model HC-C2YR-4CF propellers. 
This amendment requires the reduction of the original hub and blades 
certified service (fatigue) life from unlimited hours to 2,000 hours. 
This amendment is prompted by a reevaluation by Hartzell Propeller Inc. 
of the original hub and blades service life certification calculations. 
The actions specified by this AD are intended to prevent fatigue 
failure of the original propeller hub and blades which may result in 
loss of airplane control.

DATES: Effective March 11, 2003.

ADDRESSES: Information regarding this action may be examined, by 
appointment, at the Federal Aviation Administration (FAA), New England 
Region, Office of the Regional Counsel, 12 New England Executive Park, 
Burlington, MA.

FOR FURTHER INFORMATION CONTACT: Tomaso DiPaolo, Aerospace Engineer, 
Chicago Aircraft Certification Office, FAA, Small Airplane Directorate, 
2300 East Devon Avenue, Des Plaines, IL 60018, telephone (847) 294-
7031; fax (847) 294-7834.

SUPPLEMENTARY INFORMATION: A proposal to amend part 39 of the Federal 
Aviation Regulations (14 CFR part 39) to include an AD that is 
applicable to Hartzell Propeller Inc. model HC-C2YR-4CF propellers was 
published in the Federal Register on September 19, 2002 (67 FR 59026). 
That action proposed to require the reduction of the propeller hubs 
part number (P/N) D-6522-1 or D-2201-16 and blades P/N FC8477A-4 
certified service (fatigue) life from unlimited hours to 2,000 hours. 
The FAA and Hartzell Propeller Inc. have received reports of several 
engine crankshaft failures on Sky International Inc. (Pitts) S-2S and 
S-2B airplanes, which are manufactured by Aviat Aircraft Inc. of Afton, 
WY. Hartzell Propeller Inc. reevaluated the service (fatigue) life of 
the original propeller hubs P/N D-6522-1 or D-2201-16 and blades P/N 
FC8477A-4 installed in the model HC-C2YR-4CF propellers. Hartzell has 
reduced the certified service (fatigue) life of these original 
propeller hubs and blades from unlimited hours to 2,000 hours. 
Exceeding these life limits could result in fatigue failure of the hubs 
or blades which may result in loss of airplane control. The 2,000-hour 
life limit is documented in the Airworthiness Limitations section of 
Hartzell Manual 113B.

Comments

    Interested persons have been afforded an opportunity to participate 
in the making of this amendment. Due consideration has been given to 
the comment received.

Risk if Life of a Component Is Not Known

    One commenter states that the proposal introduces a life limit 
where there was none previously required. The commenter also states 
that there is a risk that operators or maintenance organizations may 
not know the current life of the applicable parts, and that the NPRM 
does not include any proposal to estimate usage or factoring where the 
life of a component is not known.
    The FAA does not agree. Under 14 CFR 91.417(a)(2)(i), each 
registered owner or operator must keep records of the total time in 
service of each propeller. The propellers affected by this AD are flown 
on aircraft used in part 91 operations. Moreover, 14 CFR 91.417(b)(2) 
requires that the records must denote the total time, must be retained 
for an unlimited time, and must be transferred with the aircraft. 
Therefore, if a propeller's total time is unknown, then the propeller 
and the registered owner or operator are not in compliance with the 
regulations. Presently, the FAA will not pursue policy to approve a 
general formula for calculating total time on propellers with unknown 
total times. Please note that the final rule allows for the submittal 
of data to request and to justify an alternate method of compliance to 
the AD or an adjustment of the compliance time in the AD.
    After careful review of the available data, including the comment 
noted above, the FAA has determined that air safety and the public 
interest require the adoption of the rule as proposed.

Economic Analysis

    There are approximately 377 propellers of the affected design in 
the worldwide fleet. The FAA estimates that 300 propellers installed on 
airplanes of U.S. registry would be affected by this AD, that it would 
take approximately 6 work hours per propeller to do the actions, and 
that the average labor rate is $60 per work hour. The approximate cost 
of a new hub and blades is $9,000. Based on these figures, the total 
cost of the AD to U.S. operators is estimated to be $2,808,000.

Regulatory Analysis

    This final rule does not have federalism implications, as defined 
in Executive Order 13132, because it would not have a substantial 
direct

[[Page 5542]]

effect on the States, on the relationship between the national 
government and the States, or on the distribution of power and 
responsibilities among the various levels of government. Accordingly, 
the FAA has not consulted with state authorities prior to publication 
of this final rule.
    For the reasons discussed above, I certify that this action (1) Is 
not a ``significant regulatory action'' under Executive Order 12866; 
(2) Is not a ``significant rule'' under the DOT Regulatory Policies and 
Procedures (44 FR 11034, February 26, 1979); and (3) will not have a 
significant economic impact, positive or negative, on a substantial 
number of small entities under the criteria of the Regulatory 
Flexibility Act. A final evaluation has been prepared for this action 
and it is contained in the Rules Docket. A copy of it may be obtained 
by contacting the Rules Docket at the location provided under the 
caption ADDRESSES.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Safety.

Adoption of the Amendment

    Accordingly, pursuant to the authority delegated to me by the 
Administrator, the Federal Aviation Administration amends part 39 of 
the Federal Aviation Regulations (14 CFR part 39) as follows:

PART 39--AIRWORTHINESS DIRECTIVES

    1. The authority citation for part 39 continues to read as follows:

    Authority: 49 U.S.C. 106(g), 40113, 44701.


Sec.  39.13  [Amended]

    2. Section 39.13 is amended by adding a new airworthiness directive 
to read as follows:

2003-03-20 Hartzell Propeller Inc.: Amendment 39-13045. Docket No. 
2001-NE-48-AD.
    Applicability: This airworthiness directive (AD) is applicable 
to Hartzell Propeller Inc. model HC-C2YR-4CF propellers with 
propeller hubs part number (P/N) D-6522-1 or D-2201-16 and propeller 
blades P/N FC8477A-4, installed on Sky International Inc. (Pitts) S-
2S and S-2B airplanes with Textron Lycoming model AEIO-540-D4A5 
engines.

    Note 1: This AD applies to each propeller identified in the 
preceding applicability provision, regardless of whether it has been 
modified, altered, or repaired in the area subject to the 
requirements of this AD. For propellers that have been modified, 
altered, or repaired so that the performance of the requirements of 
this AD is affected, the owner/operator must request approval for an 
alternative method of compliance in accordance with paragraph (d) of 
this AD. The request should include an assessment of the effect of 
the modification, alteration, or repair on the unsafe condition 
addressed by this AD; and, if the unsafe condition has not been 
eliminated, the request should include specific proposed actions to 
address it.

    Compliance: Compliance with this AD is required as indicated, 
unless already done.
    To prevent fatigue failure of Hartzell propeller hubs P/N D-
6522-1 or D-2201-16 and blades P/N FC8477A-4 which may result in 
loss of airplane control, do the following:
    (a) Remove from service Hartzell propeller hubs P/N D-6522-1 or 
D-2201-16 and blades P/N FC8477A-4 before exceeding 2,000 flight 
hours and replace with serviceable hubs and blades.
    (b) After the effective date of this AD, do not install any 
Hartzell propeller hubs P/N D-6522-1 or D-2201-16 and blades P/N 
FC8477A-4 that have accumulated 2,000 hours.
    (c) A propeller hub or blade from an airplane that is identified 
in the applicability section of this AD may not be removed and 
reused on an airplane for which this AD is not applicable.

Alternative Methods of Compliance

    (d) An alternative method of compliance or adjustment of the 
compliance time that provides an acceptable level of safety may be 
used if approved by the Manager, Chicago Aircraft Certification 
Office (ACO). Operators must submit their request through an 
appropriate FAA Principal Maintenance Inspector, who may add 
comments and then send it to the Manager, Chicago ACO.

    Note 2: Information concerning the existence of approved 
alternative methods of compliance with this airworthiness directive, 
if any, may be obtained from the Chicago ACO.

Special Flight Permits

    (e) Special flight permits may be issued in accordance with 
Sec. Sec.  21.197 and 21.199 of the Federal Aviation Regulations (14 
CFR 21.197 and 21.199) to operate the airplane to a location where 
the requirements of this AD can be done.

Effective Date

    (f) This amendment becomes effective on March 11, 2003.

    Issued in Burlington, Massachusetts, on January 28, 2003.
Jay J. Pardee,
Manager, Engine and Propeller Directorate, Aircraft Certification 
Service.
[FR Doc. 03-2464 Filed 2-3-03; 8:45 am]
BILLING CODE 4910-13-P

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