Mon, Dec 11, 2006
Tulsa Shop Did Not Have Current Repairman Certificates
The Federal Aviation Administration has issued a notification
for aircraft owners, operators, manufacturers, maintenance
organizations, and parts suppliers and distributors regarding
improper maintenance performed on reciprocating engine crankcases
by a maintenance shop in Tulsa, OK.
Information received during an FAA suspected unapproved parts
investigation revealed that between November 2003 and March 2006,
Crankcase Services USA, Ltd. (Crankcase), improperly maintained and
approved for return to service reciprocating engine crankcases.
Crankcase holds Air Agency Certificate No. UMRR730X and is
authorized to perform maintenance using an approved welding process
to repair reciprocating engine crankcases.
Discrepancies noted in Crankcase practices included, but are not
limited to, the following:
- Failing to ensure that all test and inspection instruments used
to make airworthiness determinations are calibrated to a standard
acceptable to the FAA. Crankcase used torque wrenches, digital
depth micrometers, and dial indicators that exceeded the time
allotted for recalibration by approximately two years.
- Failing to maintain required record keeping in accordance with
their repair station manual.
- Approving articles for return to service without holding
current FAA Repairman Certificates.
A partial list of suspect parts is available at the FMI link
As regulations require that type-certificated products conform
to their type design, the FAA recommends all users that are
possibly affected by this notification should inspect their
aircraft, aircraft records, and/or parts inventories for any
crankcase halves approved for return to service by Crankcase. If
these parts are found installed on aircraft, appropriate action
should be taken.
If any crankcase halves approved for return to service by
Crankcase are found in existing inventory, it is recommended that
they be segregated to prevent installation until their eligibility
for installation is determined.
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