Airworthiness Directives
| Airworthiness Directives |
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97-15-11 Avco Lycoming and Textron Lycoming: Amendment 39-10085. Docket 97-ANE-26-AD. Supersedes AD 97-01-03, Amendment 39-9874.
Applicability: Avco Lycoming and Textron Lycoming O-320, IO-320, LIO-320,
AIO-320, AEIO-320, O-360, LO-360, IO-360, LIO-360, VO-360, IVO-360, HO-360,
HIO-360, LHIO-360, AIO-360, AEIO-360, TIO-360, TO-360, LTO-360, LTIO-360,
O-480, GO-480,
IGO-480, GSO-480, IGSO-480, O-540 (except O-540-J1A5D, -J1C5D, -J2A5D, -J3A5D,
-J3C5D, -L3C5D), IO-540 (except IO-540-W1A5D, -W3A5D, -AB1A5), AEIO-540,
TIO-540, LTIO-540, VO-540, IVO-540, TVO-540, TIVO-540, HIO-540, IGO-540,
IGSO-540, TIO-541, TIGO-541, and IO-720 series reciprocating engines, that
meet any one of the following conditions:
1. Engines with serial
numbers (S/Ns) listed in Textron Lycoming Mandatory Service Bulletin (SB)
No. 527C, dated April 18, 1997; or
2. Engines that had Textron Lycoming cylinder kits installed after December 15, 1995; or
3. Engines that have been overhauled, or had cylinder head maintenance
performed, by a repair facility other than Textron Lycoming after December
15, 1995.
These engines are installed on but not limited to reciprocating engine powered aircraft manufactured by
Aerospatiale, Bellanca, Cessna, The New Piper Company, Beech, Schweizer, Maule, and Mooney.
Note 1: A maintenance records 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 (e) 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 piston pin failure, which could result in engine failure, accomplish the following:
(a) No action is required for engines that have been inspected in accordance with AD 97-01-03.
(b) For engines that have not been inspected in accordance with AD
97-01-03, and with S/Ns listed in Textron Lycoming Mandatory SB No. 527C,
dated April 18, 1997, accomplish the following:
(1) Check the piston pin code in accordance with Textron Lycoming
SB No. 527C, dated April 18, 1997, in accordance with the following schedule:
(i) For engines with 45 hours or more time in service (TIS) since
the engine was shipped from Textron Lycoming, since overhaul, since installation
of a cylinder kit, or since installation of a replacement piston pin, as
applicable, accomplish within 5 hours TIS after the effective date of this
AD.
(ii) For engines with less than 45 hours TIS since the engine was
shipped from Textron Lycoming, since overhaul, since installation of a cylinder
kit, or since installation of a replacement piston pin, as applicable, accomplish
prior to accumulating 50 hours TIS since the applicable date.
(2) Remove from service piston pins, Part Number (P/N) LW-14077, code 17328, and replace with serviceable piston pins.
(c) For all other affected engines that have not been inspected in
accordance with AD 97-01-03, determine if a suspect piston pin, P/N LW-14077,
code 17328 could have been installed, in accordance with Textron Lycoming
Mandatory SB No. 527C, dated April 18, 1997, and accomplish the following:
(1) If it is determined that suspect piston pins, P/N LW-14077, code
17328 could have been installed, accomplish paragraphs (b)(1) and (b)(2)
of this AD.
(2) If it is determined that suspect piston pins, P/N LW-14077, code
17328 could not have been installed, no further action is required.
(3) If it can not be determined if the suspect piston pins, P/N LW-14077,
code 17328 were installed, accomplish paragraphs (b)(1) and (b)(2) of this
AD.
(d) For the purpose of this AD, a serviceable piston pin is a piston pin,
P/N LW-14077, with a piston pin code of "BN" or "71238." Installation of
a piston pin, P/N LW-14077, with a piston pin code of "17328" is prohibited
after the effective date of this AD.
(e) 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, New York Aircraft Certification Office. Operators shall
submit their requests through an appropriate FAA Maintenance Inspector, who
may add comments and then send it to the Manager, New York Aircraft 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 New York Aircraft Certification Office.
(f) 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 requirements of this
AD can be accomplished.
(g) The actions required by this AD shall be done in accordance with the following Textron Lycoming Mandatory SB:
Document No. | Pages | Date |
| 527C | 1-4 | April 18, 1997 |
| Attachment I | 1-6 | April 18, 1997 |
| Attachment II | 1 | April 18, 1997 |
| Total pages: 11. |  | |
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