TB 212-11-211
Page 3 of 8
ECCN EAR99
WEIGHT AND BALANCE:
Longitudinal Lateral*
Weight Arm Moment Arm Moment
+0.2 Lbs
153 in. +31 in-Lbs -17.0 in. -3.0 in-Lbs
+0.1 kgs 3886 mm +3.5 kg x mm/100 -432 mm -0.4 kg x mm/100
* In lateral calculations, - is left and + is right.
ELECTRICAL LOAD DATA:
Not affected
REFERENCES:
BHT-212-IPB Illustrated Parts Breakdown
BHT-212-MM Maintenance Manual
BHT-MED-SRM-1 Structural Repair Manual
BHT-ALL-SRM Structural Repair Manual
BHT-ALL-SPM Standard Practices Manual
PUBLICATIONS AFFECTED:
BHT-212-IPB Illustrated Parts Breakdown
ACCOMPLISHMENT INSTRUCTIONS:
Part 1:
1. Prepare helicopter for maintenance.
2. Open forward transmission cowling (1, Figure 1).
3. Remove left hand air inlet cowling (2).
4. Inspect N1 Jackshaft support bearing boss for wear on the forward side of the boss
see Figure 2.
5. If wear is found proceed to Part 2 of this Technical Bulletin.
6. If no wear is found reinstall left hand air inlet cowling (2) and latch in place.
7. Close forward transmission cowling (1).
8. Make an entry in helicopter historical service records indicating compliance with Part
1 of this Technical Bulletin.
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