Textron Bell 412, Руководство по обслуживанию

Страница: 67 / 288

BHT-412-MM-2
5-00-00
26 FEB 2013 Rev. 16 Page 35 Export Classification C, ECCN EAR99
Every third 100 hour inspection (300 hours) or 12 months:
1. Inspect tailboom joints, splices, longerons, attach fittings,
and attaching hardware for corrosion, damage, and cracks.
ASB 412-90-49 2. Remove plug button at BS 99.00.
NOTE
Paint fissures are common in the splice area, cracks
will be evident by black powder emanating from
cracked area, and corrosion will leave evidence of
white powder.
3. Using a borescope or other suitable means, inspect inside
of longeron paying particular attention to cracking and/or
corrosion in area of splice.
4. Report any cracks to Product Support Engineering.
5. Install plug button with sealant (C-308).
Chapter 62 MAIN ROTOR BLADES
1. Wash main rotor blades.
2. Inspect main rotor blades’ upper and lower surfaces for
condition of bond lines and doublers. Leading edge for erosion.
Blade surfaces for corrosion, cracks, damage, and voids.
3. Inspect blade retention bolts for condition and security.
NOTE
Waxing is not required for blades 412-015-300-109
and subsequent or for any blade finished with
polyurethane paint.
4. Apply a coat of wax to main rotor blades.
Chapter 62 MAIN ROTOR HUB
1. Inspect hub assembly for condition, corrosion, and
security, paying particular attention to the integrity of sealing.
SCHEDULED INSPECTIONS
5-6. 100 HOUR/12 MONTH INSPECTION — PART A (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER