dhc-6-300 'b' check basic inspection requirements - IDEAS-EC

AMD-140J (3/08)
DHC-6-300 'B' CHECK
BASIC INSPECTION REQUIREMENTS
U.S. DEPARTMENT OF THE INTERIOR
1
N49SJ S/N 423 DATE:
DHC-6-300 HOBBS METER TIME: A/C TT:
AIR CONDITIONING - CHAPTER 21 MECH INSP
1 CABIN FLOOR RETURN AIR GRILL FILTER - Condition & free from obstruction.
COMMUNICATIONS - CHAPTER 23 MECH INSP
1 FLIGHT COMPARTMENT PILOT AND COPILOT HEAD SETS - Condition & security.
2 AUDIO SYSTEM - Operational test of interphone & audio integrating systems.
3 LIGHTNING PROTECTION - Rod for condition & security.
4 ALL SYSTEMS - Operational test.
ELECTRICAL POWER - CHAPTER 24 MECH INSP
BATTERY, CONCORDE RG-380E/44 (MAIN) - Condition & security; cables for security.
1 Battery compartment for spillage & corrosion.
2
2
1
2
3
1
2
BATTERY VENT SYSTEM - Vent jar for condition & security, pad correctly saturated, hoses for
condition & connections for security.
BATTERY, RG-125 (AUXILIARY) - Condition & security; cables for security, support
structure for condition & security. Check emergency capacity. (12 months/1000 hours)
FIRE PROTECTION - CHAPTER 26 MECH INSP
DETECTING THERMAL UNITS - Condition & security.
EXTINGUISHER BOTTLE - Condition & security including correct pressure.
SYSTEM PIPES AND ELECTRICAL WIRING - Pipes for condition& security; electrical wiring for
condition & connectors for security.
FLIGHT CONTROLS - CHAPTER 27 MECH INSP
FLAP ACTUATOR - Condition & security of mounting & leakage.
FLAP SELECTOR VALVE - Condition, security of mounting & leakage; selector pulleys properly secured to
spindle.
3
4
5
6
FUEL - CHAPTER 28 MECH INSP
1 BOOSTER PUMPS - Operational test. (Evidence of rough running (Power on)
2
4 FUEL STRAINER BODY - Condition & security of attachment bolts; drain valve for security.
5
FLAP DRIP TRAYS - Condition & security; fluid content; remove, dry out & instslllpads as required.
STALL WARNING LIGHT AND HORN - Function test. (Power on)
LIFT DETECTOR VANES (WING) - Freedom of movement, condition, corrosion & security. Operational
test (in conjunction with pitot head heat.
FLIGHT CONTROL SYSTEM - Operational test with trim tabs for full & freedom of movement & wing flaps
in normal & emergency mode condition.
FUEL STRAINER ELEMENT - Replace 10 micron element as required.
NOTE: After replacement of fuel tank, if excessive forgin matter is found in fuel strainer after 50 flight hours, drain
& flush system & inspect motive line check valve strainers for forgin matter. If excessive recheck in next 2o flight
hours.
WING TANK FUEL - Drain fuel & check samples for contamination. Remove fuel filler, clean as
required & install. Leak check.
NOTE: If contamination is evident, remove panel at top of tank & inspect interior of tank. Drain & flush
as necessary, & clean strainer at end of fuel outlet pipe. When installing panel, seal in accordance with
Maintenance Manual.
HYDRAULIC POWER - CHAPTER 29 MECH INSP
1
POWER PACKAGE RESERVIOR - Hydraulic reservoir filler neck for condition & contamination;
fluid leakage, dip stik seal for deterioration. End of vent clear of power package tray.

AMD-140J (3/08)
DHC-6-300 'B' CHECK
BASIC INSPECTION REQUIREMENTS
U.S. DEPARTMENT OF THE INTERIOR
ICE AND RAIN PROTECTION - CHAPTER 30 MECH INSP
PROPELLER DE-ICENG BLADE BOOTS - Boots for cuts, tears, burns, deterioration &
2 proper adhesion.
3 PROPELLER DE-ICENG BRUSH BLOCK ASSEMBLY - Condition & security.
4
LANDING GEAR - CHAPTER 32 MECH INSP
1 NOSE GEAR - Correct extension as given on data plate. Fork retaining nut secured properly.
2
3
4
5
6
7
8
9
NOTE: If indicator pins are flush with ends of adjustment nuts (brake pressure off), check that brake
lining wear is within limits. Refer to Maintenance Manual.
MAIN WHEEL BRAKE DISC GUIDE PAD (When installed) - Condition & security.
MAIN WHEELS - Remove & clean as required; Inspect for abrasions, cracks, chipped rims; brake
drive rings for condition & signs of wear, bearings, bush & seals for condition.Lubricate bearing. Install
servicable wheel & tire.
NAVIGATION - CHAPTER 34 MECH INSP
1 WEATHER RADAR SYSTEM - Operational test. (Power on)
2 ALL SYSTEMS - Operational test. (Power on)
1
OXYGEN - CHAPTER 35 MECH INSP
2 PASSENGER OXYGEN - Proper operation; contamination (by smell).
3
PASSENGER OXYGEN INDICATOR AND CHARGING VALVE - Condition. Clean as
required.
4 PASSENGER OXYGEN OUTLETS- Clear of obstruction. Clean as required.
1
DOORS - CHAPTER 52 MECH INSP
CABIN ESCAPE HATCH DOORS - Proper operation; seals for condition & security.
FUSELAGE - CHAPTER 53 MECH INSP
1 CABIN FLOOR PANELS - Condition, delamination, corrosion & security. Clean as required.
NOTE: If floor panels are severely damaged, remove panels & inspect supporting structure for
damage, buckling & cracks.
2 CABIN FLOOR PANELS - Cargo tie-down ring locations & rings for condition & security.
1
2
1
PROPELLER DE-ICENG BACK SPIN PLATE AND SLIP RING - Condition & security.
STEERING ACTUATOR - Condition & leakage; hydraulic pipes & input swivel lever for condition,
connections for security & leakage.
NOSE WHEEL ASSEMBLY - Remove & clean as required; Inspect for abrasions, cracks, chipped rims,
bearings for condition, bushing for wear & seal for deteriortion. Install wheel assembly.
STEERING ACTUATOR LINKAGE - Condition, corrosion & security; fouling of linkage on shock strut
cylinder body.
MAIN WHEEL BRAKE HOUSING - Cylinders & associated lines for condition, leakage & evidence of
overheating.
MAIN WHEEL BRAKE DISCS - Scoring & evidence of overheating.
MAIN WHEEL BRAKE PUCK LIINGS - Wear within limits.
CREW OXYGEN - Proper operation (normal & emergency); contamination (by smell).
STABILIZERS - CHAPTER 55 MECH INSP
RUDDER TRIM AND GEAR TAB HINGE ARMS - Hinge arms for condition & security,
connecting hinge arm bolts for safety & security.
ELEVATOR TRIM AND INTERCONNECT TAB HINGE ARMS - Hinge arms for
condition & security, connecting hinge arm bolts for safety & security.
WINGS - CHAPTER 57 MECH MECH INSP
WING MAIN HINGE ARMS - Hinge arms, bonding wire & bearing for condition & security, &
attachment bolts for safety & security.
2 INBD TRAILING FLAP - Condition, skins for cracks & fasteners for security.
NOTE: Refer to Servive Bulletin 6/345.
WING FLAP, AILERON HINGE ARMS AND CONNECTING LINK ATTACH BOLTS
3 - Safety & security.
2

AMD-140J (3/08)
DHC-6-300 'B' CHECK
BASIC INSPECTION REQUIREMENTS
U.S. DEPARTMENT OF THE INTERIOR
3
PROPELLERS - CHAPTER 61 MECH MECH INSP
1
BLADES, SPINNER AND HUB PARTS - Condition, blades for nicks & cracks. Blend nicks out
from leading edge.
ENGINE - CHAPTER 72 MECH MECH INSP
1 EXHAUST DUCTS - Condition, deflector vanes for cracks, erosion & security.
STARTING - CHAPTER 80 MECH MECH INSP
1 GLOW PLUGS - Remove for operational test. Clean as required. Install servicable unit.
OPERATIONAL CHECK AND POST INSPECTION MECH INSP
1 ACCESS COVERS, FAIRINGS AND COWLINGS - Assure their proper reinstallation.
2
1
ENGINE RUN-UP - Perform an operational check of the engine, engine instruments & other
systems. Inspect the engine compartment following the operational check for leaks or abnormalities.
Taxi check the operation of the brakes.
SERVICE BULLETINS AND AIRWORTHINESS DIRECTIVES MECH INSP
MANUFACTURE SERVICE BULLETINS - Check that all Bulletins complied with, at the
governments request, are documented into the aircraft log books.
2
AIRWORTHINESS DIRECTIVES - Check that all AD's have been complied with or determined
to be not applicable and documented into the aircraft log books as such.
3 LOG BOOK ENTRIES / FORM 337 / WEIGHT AND BALANCE - Ensure all maintenance record
This inspection check list is derived from the requirements of the PSM 1-6-7 DHC-6 TWIN OTTER Inspection Requirements Manual,
Revision 12,dated March 12, 2007, engine and component manufacturers Maintenance Manuals, Service Publications and STC
instructions for continued airworthiness in compliance with FAR Part 91.409 (f)(3).