TB 212-11-211
Page 1 of 8
ECCN EAR99
TECHNICAL BULLETIN
212-11-211
21 March 2011
MODEL AFFECTED:
212
SUBJECT:
NUMBER ONE ENGINE JACKSHAFT SUPPORT
INSPECTION AND MODIFICATION OF.
HELICOPTERS
AFFECTED: Model 212 helicopters serial number 30501
through 30999, 31101 through 31311, 32101
through 32142 and 35001 through 35103.
[Model 212 helicopters serial number 31312 and
subsequent, 32143 and subsequent, 35104 and
subsequent will have the intent of this bulletin
accomplished prior to delivery.]
COMPLIANCE: Part
1:
Recommended.
Part 2:
At customer’s option
.
DESCRIPTION:
Bell Helicopter has been made aware of a possible fouling condition that may exist
between the number one jackshaft support and the forward firewall of the intake
cowling. This Technical Bulletin provides an inspection procedure to verify adequate
clearance between the N1 jackshaft support and if a fouling condition exists, the
corrective action to be taken. Applicability of this bulletin to any spare parts shall be
determined prior to its installation on an affected aircraft.
APPROVAL:
The engineering design aspects of this bulletin are FAA/ODA approved.
CONTACT INFO:
For any questions regarding this bulletin, please contact:
Bell Helicopter Product Support Engineering - Medium Helicopters
Tel: 450-437-6201 / 1-800-363-8028 / [email protected]
