Airworthiness Directives; Superior Air Parts, Inc., Piston Pins Installed on Teledyne Continental Motors Reciprocating Engines

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 97-ANE-37-AD]

RIN 2120-AA64

Airworthiness Directives; Superior Air Parts, Inc., Piston Pins

Installed on Teledyne Continental Motors Reciprocating Engines

AGENCY: Federal Aviation Administration, DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: This document proposes the adoption of a new airworthiness

directive (AD) that is applicable to Superior Air Parts, Inc., piston

pins installed on Teledyne Continental Motors reciprocating engines.

This proposal would require removal from service of defective piston

pins, and replacement with serviceable parts. This proposal is prompted

by reports of numerous piston pin fractures. The actions specified by

the proposed AD are intended to prevent the piston pin from puncturing

the engine crankcase by the connecting rod, resulting in the loss of

oil leading to total power failure and possible fire, or freeing the

connecting rod, possibly puncturing the cylinder or jamming the engine

crankshaft, resulting in catastrophic engine failure.

DATES: Comments must be received by April 20, 1998.

ADDRESSES: Submit comments in triplicate to the Federal Aviation

Administration (FAA), New England Region, Office of the Assistant Chief

Counsel, Attention: Rules Docket No. 97-ANE-37-AD, 12 New England

Executive Park, Burlington, MA 01803-5299. Comments may also be sent

via the Internet using the following address: ``9-ad-

[email protected]''. Comments sent via the Internet must contain

the docket number in the subject line. Comments may be inspected at

this location between 8:00 a.m. and 4:30 p.m., Monday through Friday,

except Federal holidays.

The service information referenced in the proposed rule may be

obtained from Superior Air Parts, Inc. 14280 Gillis Rd., Dallas, TX

75244; telephone (800) 400-5949. This information may be examined at

the FAA, New England Region, Office of the Assistant Chief Counsel, 12

New England Executive Park, Burlington, MA.

FOR FURTHER INFORMATION CONTACT: Paul Madej, Aerospace Engineer,

Special Certification Office, FAA, Rotorcraft Directorate, 2601 Meacham

Blvd., Ft. Worth, TX 76137-4298; telephone (817) 222-4635, fax (817)

222-5785.

SUPPLEMENTARY INFORMATION:

Comments Invited

Interested persons are invited to participate in the making of the

proposed rule by submitting such written data, views, or arguments as

they may desire. Communications should identify the Rules Docket number

and be submitted in triplicate to the address specified above. All

communications received on or before the closing date for comments,

specified above, will be considered before taking action on the

proposed rule. The proposals contained in this notice may be changed in

light of the comments received.

Comments are specifically invited on the overall regulatory,

economic, environmental, and energy aspects of the proposed rule. All

comments submitted will be available, both before and after the closing

date for comments, in the Rules Docket for examination by interested

persons. A report summarizing each FAA-public contact concerned with

the substance of this proposal will be filed in the Rules Docket.

Commenters wishing the FAA to acknowledge receipt of their comments

submitted in response to this notice must submit a self-addressed,

stamped postcard on which the following statement is made: ``Comments

to Docket Number 97-ANE-37-AD.'' The postcard will be date stamped and

returned to the commenter.

Availability of NPRMs

Any person may obtain a copy of this NPRM by submitting a request

to the FAA, New England Region, Office of the Assistant Chief Counsel,

Attention: Rules Docket No. 97-ANE-37-AD, 12 New England Executive

Park, Burlington, MA 01803-5299.

Discussion

The Federal Aviation Administration (FAA) received numerous reports

of fractured Parts Manufacturer Approval (PMA) Superior Air Parts, Inc.

piston pins, Part Number (P/N) SA629690, installed on Teledyne

Continental Motors IO-360, TSIO-360, and LTSIO-360 series reciprocating

engines. The investigation reveals that some of these piston pins

shipped from Superior Air Parts, Inc. between August 1, 1994, through

June 20, 1996, may contain subsurface manufacturing imperfections, such

as higher impurity levels and retained austenite as well as

imperfections caused by final machining, such as grind burns. Failure

of the piston pin may cause puncturing of the engine crankcase by the

connecting rod resulting in the loss of oil leading to total power

failure and possible fire. Failure of the piston pin may free the

connecting rod, possibly puncturing the cylinder or cause jamming of

the engine crankshaft resulting in catastrophic engine failure.

The FAA has reviewed and approved the technical contents of

Superior Air Parts, Inc. Mandatory Service Bulletin (SB) No. 96-001,

dated August 5, 1996, that states that piston pins, P/N SA629690,

should be removed from service, and replaced with serviceable parts.

Since an unsafe condition has been identified that is likely to

exist or develop on other products of this same type design, the

proposed AD would require, within 25 hours time in service after the

effective date of this AD, removal from service of defective piston

pins, and replacement with serviceable parts. The actions would be

required to be accomplished in accordance with the SB described

previously.

The FAA estimates that 2,322 engines installed on aircraft of U.S.

registry would be affected by this proposed AD, that it would take

approximately 6 work hours per engine to accomplish the proposed

actions, and that the average labor rate is $60 per work hour. Required

parts would cost $200 per engine. Based on these figures, the total

cost impact of the proposed AD on U.S. operators is estimated to be

$1,300,320.

The regulations proposed herein would not have substantial direct

effects 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. Therefore, in

accordance with Executive Order 12612, it is determined that this

proposal would not have sufficient federalism implications to warrant

the preparation of a Federalism Assessment.

For the reasons discussed above, I certify that this proposed

regulation (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) if promulgated, 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 copy of the draft

regulatory evaluation prepared for this action is contained in the

Rules Docket. A copy of it may be obtained by contacting the Rules

Docket at the

[[Page 7740]]

location provided under the caption ADDRESSES.

List of Subjects in 14 CFR Part 39

Air transportation, Aircraft, Aviation safety, Safety.

The Proposed Amendment

Accordingly, pursuant to the authority delegated to me by the

Administrator, the Federal Aviation Administration proposes to amend

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 the following new

airworthiness directive:

Teledyne Continental Motors With PMA Superior Air Parts, Inc. Piston

Pins, Part Number (P/N) SA629690: Docket No. 97-ANE-37-AD.

Applicability: Superior Air Parts, Inc., Parts Manufacturer

Approval (PMA) piston pins, Part Number (P/N) SA629690, shipped from

Superior Air Parts, Inc., from August 1, 1994, through June 20,

1996, installed on Teledyne Continental Motors IO-360-A, -AB, -C, -

CB, -D, -DB, -G, -GB, -H, -HB, -J, -JB, -K, -KB; LTSIO-360-E, -EB, -

KB; TSIO-360-A, -AB, -C, -CB, -D, -DB, -E, -F, -FB, -GB, -H, -HB, -

JB, -KB, -LB, -MB series reciprocating engines, and which were

overhauled or had cylinder head maintenance performed by a repair

facility other than Teledyne Continental Motors after August 1,

1994. These engines are installed on but not limited to the

following aircraft: Cessna 172XP, 336, 337, T337, P337, and T-41B/C

(military); Maule M-4-210, M-4-210C, M-4-210S, M-4-210T, and M-5-

210C; Swift Museum Foundation, Inc. GC-1A, GC-1B, New Piper Inc. PA-

28-201T, PA-28R-201T, PA-28RT-201T, PA-34-200T, and PA-34-220T;

Reims FR172, F337, and FT337; Goodyear Airship Blimp 22; Mooney M20-

K; and Pierre Robin HR100.

Note 1: Shipping records, engine logbooks, work orders, and

parts invoices check may allow an owner or operator to determine if

this AD applies.

Note 2: This airworthiness directive (AD) applies to each engine

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 engines 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: Required as indicated, unless accomplished

previously.

To prevent the piston pin from puncturing engine crankcase by

the connecting rod, resulting in the loss of oil leading to total

power failure and possible fire, or freeing the connecting rod,

possibly puncturing the cylinder or jamming the engine crankshaft,

resulting in catastrophic engine failure, accomplish the following:

(a) If an engine has not had a piston pin installed after August

1, 1994, or if an engine has had a piston pin installed after August

1, 1994, but it was installed by Teledyne Continental Motors, then

no action is required.

(b) For engines that had a piston pin installed after August 1,

1994, by an entity other than Teledyne Continental Motors, within 25

hours time in service (TIS) after the effective date of this AD,

determine if a suspect PMA Superior Air Parts, Inc. piston pin, P/N

SA629620, could have been installed in accordance with Superior Air

Parts, Inc. Mandatory Service Bulletin (SB) No. 96-001, dated August

5, 1996. If unable to verify that a suspect piston pin was not

installed using a records check, disassemble the engine in

accordance with the applicable Maintenance Manual or Overhaul

Manual, visually inspect or verify for suspect piston pins, and

accomplish the following:

(1) If it is determined that suspect PMA Superior Air Parts,

Inc. piston pins, P/N SA629620, could have been installed, remove

from service defective piston pins and replace with serviceable

piston pins.

(2) If it is determined that suspect PMA Superior Air Parts,

Inc. piston pins, P/N SA629620, could not have been installed, no

further action is required.

(c) For the purpose of this AD, a serviceable piston pin is any

piston pin that has been verified not to be a PMA Superior Air

Parts, Inc. piston pin, P/N SA629690, shipped from Superior Air

Parts, Inc., from August 1, 1994, through June 20, 1996.

Installation of a PMA Superior Air Parts Inc. piston pin, P/N

SA629690, that can not be verified to be outside of the suspect

shipping period range, is prohibited after the effective date of

this AD.

(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, Special Certification Office.

Operators shall submit their requests through an appropriate FAA

Principal Maintenance Inspector, who may add comments and then send

it to the Manager, Special Certification Office.

Note 3: Information concerning the existence of approved

alternative methods of compliance with this airworthiness directive,

if any, may be obtained from the Special Certification Office.

(e) Special flight permits may be issued in accordance with

sections 21.197 and 21.199 of the Federal Aviation Regulations (14

CFR 21.197 and 21.199) to operate the aircraft to a location where

the inspection may be performed.

Issued in Burlington, Massachusetts, on February 6, 1998.

James C. Jones,

Assistant Manager, Engine and Propeller Directorate, Aircraft

Certification Service.

[FR Doc. 98-3796 Filed 2-13-98; 8:45 am]

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