HSL 41 Preflight

1
HSL 41 Preflight
2
Preflight Gouge

• This is a guide to assist you in you preflight
  and identification of components.
• This is not a substitute of NATOPS.

3
OBJECTIVES

• Preflight Requirements
• What to look for
• CAUTIONS, WARNINGS, NOTES

4
BEFORE YOU START...

• Thoroughly check the ADB (Aircraft Discrepancy
  Book)
• Are the Daily and Turnaround Inspections properly
  completed and up to date?
• Fuel Samples? Oil Consumption?
• Are there any gripes that catch your eye?

5
NATOPS CHAPTER 7

• 7.2 PREFLIGHT
• Prior to flight, the pilot in command shall
  ensure that a complete visual check of the
  helicopter has been conducted.
• The aircrew preflight inspection may be divided
  among pilot, ATO, and Sensor Operator.

6
PREFLIGHT YOUR EQUIPMENT

• Flight Suit (dog tags?)
• Make sure you are FOD free
• Helmet
• Lip light? Clean Visors?
• Gloves
• No holes
• Flashlight

7
NATOPS CHECKLIST

• Use NATOPS checklist items as a minimum.
• Preflight with other HACs and ask questions!
• Talk to other pilots, aircrew, and maintainers
  for what they look for.
• Perform a daily and turnaround to see what our
  maintainers are looking for.
• Inspect with extra concern areas that have
  recently been worked on or that have outstanding
  or recurring gripes in the ADB.

8
GETTING STARTED

• Initial walk around
• Look at the aircraft for anything that looks out
  of place.
• Man, that just aint right!
• Are tie downs, plugs, and covers still installed?
• Leakage
• Is there any noticeable oil or fuel on the
  ground?
• Is fluid running down the side, underside, or
  tail?

9
WHEN IN DOUBT

• If something doesnt look right, ask!
  
• To call a troubleshooter use (DEMOT) Make a T
  signal with both hands followed by a number.
  T-1 AD, T-2 AE, T-3 AM, T-4 AO, T-5
  AT

AD
AE
AM
AO
AT
10
DOWNING AN AIRCRAFT

• If you dont feel it is safe, dont fly it!
• Maintenance Control can tell you if a gripe is up
  or down by checking the MIMs (Maintenance
  Instruction Manuals).
• QA is always there to help.
• Make sure the question is answered to your
  satisfaction!

11
PREFLIGHT..
NATOPS ITEMS
ADDITIONAL ITEMS
12
Seat Harness
ELT
Seat Track
13
FLIR HCU
Flight Controls
14
Wave Guide Bottles
Selector Valve WPS- Select A or B
Radar Pressure Pop out
15
Nose Bay Door Seal
Windshield Wipers
TACAN Antenna
Temperature Sensors
KIT 1C Mount
UHF 2
Laser Enable/ Disable, Gimble Switch
Displacement Gyros
NSIU
Pitot Tube
ECA
FLIR Turret Unit
AFCS
RADOME
ESM ACU
Turn Rate Gyros
Ground
AAR-47
Data Link Antenna
ESM Antenna
Search/Hover Lights
RADALT Antennas
16
Drive Shaft Covers
Electrical Equipment Compartment
Engine Exhaust
APU Exhaust
Gravity Refuel
Water wash
ESM Antenna
Static Ports
SO Window
Sonobuoy Launcher
WOW Switch
Door
Pylons and Stores
Pressure Refuel
Avionics Cooling Exhaust
Fire Extinguisher Thermal Plug
Anticollision Light
Ext ICS Arm Panel
Position Light
Sonobuoy Antenna
17
Check all underside panels are secure.
18
Strut
Brake Lines
Grounding Wire (Hidden)
Brake PUK Indicators
Tire Condition
19
Lock Lever in unlocked position. Check up in
locked position.
Strut Condition
Grounding Wire
Tire Condition
Shimmy Dampner
Tail Grounding Wire
Slip Marks
Tail Probe
20
Lower Anti-collision Light
Data Link Antenna
UHF/TACAN Antenna
Block I, UHF/VHF/TACAN Antenna
21
Pylon Fold Hinges
Lockpin
Keeper
22
Oil Cap
IGB Cowling
Cap Lock
Oil Level
23
Stab Lockpins
Keeper
Tail Bumper
24
Stabilator
Isolator Mount
Position Sensor Arm
Actuator Arm/Rod
Forward Spar
Forward Spar Web
25
Anti Collision Light
Position Light
AAR-47
Stab Position Link
Stab Actuator
Static Wicks
26
De-Ice Harness
Pitch Change Links
Bonding Wire
Indexer Retracted
Pitch Change Shaft
Pitch Beam
Tail Rotor Blades
27
TGB Oil Cap
Balancing Weight Location
TGB Cowling
Pitch Beam Retainer Nut
28
Anti-collision Light (Note screw installed in
top of upper light, not installed on lower
light, to allow water to drain)
Tail Rotor
Spring Cylinders
Blade Boot
Tail Rotor Quadrant
Flexible Thomas Coupling
Tail Rotor Servo
Number 6 Driveshaft
Centering Springs
Hydraulic Lines
Cable and Pulley (each side of Quadrant)
29
Tail Rotor - Cont.
Pitch Beam Retainer Nut
Index Actuator
Indexer shown in extended position. Check
retracted
Pitch Change Beam
Blade De-ice Connector
Pitch Change Shaft
30
Chip Detector Retaining Ring
31
Abrasion strips and de-ice boots
TGB Oil Level
T/R Tip Cap
32
Disconnect Jaws
Tail Driveshaft Disconnect Spring
Thomas Coupling
Viscous Damper
33
Underside of blades
6
5
4
Critical Fasteners
34
Transition Section
Tail Cone (Thermal Barrier removed)
Accumulator Dump Valve
Tail Strut
APU Accumulator
ECS Duct
Looking forward, above fuel cell
Premature Breakaway Indicator
Fuel Lines Breakaway valves
Dehydrator Kit
Doppler Antenna (under platform)
35
Ice Detector (hidden)
ECS Exhaust
Rescue Hoist
Avionics Cooling Inlet
Mirror
HF Antenna
ECS Intake
Cabin Door
Float bag Fairing
MAD Reeling Machine and Towed Body
Pylon and Stores
Main Landing Gear Drag Beam
External Power Receptacle Access
36
Sono Launcher Bottle
RAST Backup Messenger Cable
Distributor Lock
First Aid Kit
Crash Axe
Hoist Pendant
Fire Extinguisher
RAST Equipment
Sono Launcher Selector Valve
APU Pump Handle
37
Cabin
APU Accumulator Pump (manual)
HIFR Pressure Gauge
APU Accumulator Pressure Gauge
HIFR Go-No-Go Filter
ECS Duct
APU Pump Handle
APU Accumulator Nitrogen Charge
APU ESU
38
APU Accumulator Min 2650 PSI
Winterization Kit
Xsmn PDI
39
Hover Grip
Rescue Station
Hoist Shear Cover
RAST Manual Release
RAST Machine
ICS cord
Fire Extinguisher
Hoist Pendant
RAST Reeling Machine
First Aid Kit
Ratchet
Canteen
NATOPS
40
Hydraulics Bay - cont.
Yaw Trim Servo
Back-up Hydraulic Pump
Collective Trim Servo
Roll Trim Servo
Pitch Bias Actuator (PBA)
Pitch Trim Servo
Avionics Cooling Inlet
Pressure Reducer Failure Indicator
41
Hydraulics Bay - cont.
SAS Actuator
Boost Servo
SAS Retaining Nut
Redundant Link
Forward
42
Hydraulics Bay - cont.
Torque Shaft Lever Upper Support Bearings
(under boots)
43
Hydraulics Bay - Cont.
Back-up Pump Motor
No. 1 Transfer Module
Lateral Primary Servo
Aft Primary Servo
Blade Fold Transducers
Mixing Assembly/Unit
Imperfect Threads
Forward Primary Servo
44
Hydraulics Bay - Cont.
2 AC Generator
Coffee Can Hydraulic Reservoir
Accessory Module
2 Hydraulic Pump
Quick Disconnects
Hydraulic Selector Valve
Filter Bypass Popout Buttons
Bleed valve
Check for
Temperature Dots
Mated white paint stripe
Roll pin and safety wire
Hydraulic Transfer Module
Load Demand Spindle (LDS) Cable
45
Main Rotor Head
Hydraulic Damper Hose
BIFILAR Absorber Weight
Blade Lockpin Pullers (pins, 2 per blade,
shown retracted into housing)
Pitch Lock Motor
Pitch Horn
Pitch Lockpin
PCR Elastomeric Bearing
Droop Stop
Damper
Pitch Change Rod (PCR)
Droop Stop Heater Connector
46
Thrust Elastomeric Bearing (viewed through hub
cutouts with mirror)
Main Rotor Head - cont.
Anti-flap Cam
Spherical Elastomeric Bearing (backside
viewed through hub cutouts using mirror
BIM Indicator
47
Pitch Lock Pins
Main Rotor Blade Elastomeric Bearing
BIFILAR Absorber Weight
48
Balance Weight Attachment Arm
Blade Fold Lock Pins
Top of Blades
Anti-Flap Stop
BIM Indicator
Blade Fold Motor
49
Main Rotor Hub Assembly
Damper
Anti-Flap Stop
Pitch Change Horn
Pitch Lock Actuator
Droop Stop
Heated Droop Stop Harness
PCRs
50
Accumulator Pressure 1200 PSI minimum
51
Lower Pressure Plate
Rotating Scissors
Swashplate
Forward Xmsn/Rotor
52
Oil Filler Cap
Xmsn Dip Stick
Gust Lock Indexer
Rotor Brake Disc
Aft Xmsn/Rotor
53
OLD Pitch Control Rod
Pitch Control Rod New with elastomeric bearing
54
Transmission Oil Cooler Access
Scissors
Rotor Brake
Indexer / Gust Lock
Spark Shield
Brake Disk
Driveshaft Flexible Couplings
Wear Indicator Pins
Rotor Brake Accumulator
Fuel Selector Cables (from Cockpit)
No. 1 Driveshaft
Fuel Selector Valve
Fuel Lines (Crossfeed)
XMSN Oil Cooler Blower / Fan
APU AIR SOURCE
Fire Extinguisher Line
Crossbleed Air Lines
Transmission (XMSN) Oil Lines
55
Engine Compartment
Fire Detector (1 of 2)
Starter Oil Reservoir Cap
Starter
Fire Extinguisher Port (1 of 3)
Bleed Air (crossbleed)
Hydro Mechanical Unit (HMU)
Power Available Spindle (PAS) Rotary Input
Load Demand Spindle (LDS) Rotary Input
56
Engine Compartment - cont.
Fuel Line
Oil Filter
HMU
Fuel Oil Heat Exchanger
Overspeed Drain Valve
Fire Extinguisher Port (2 of 3)
Bleed Air Clamp (Inlet Anti-ice)
Filter Popout Button
Fuel Filter
Fuel Pressure Switch
57
Engine Compartment - cont.
History Recorder
Fire Detector
Fire Extinguisher Port (3 of 3)
Oil Cap
Mount Strut
Inlet Particle Separator (IPS)
Fire Detector (2 of 2)
Electrical Control Unit (ECU)
58
Engine Compartment - cont.
Combustion Section
Mount Struts
Deswirl Duct Clamp
59
Engine Compartment - cont.
Viewed from port side
IPS Blower
HMU Variable Geometry (VG) servo
Check pins (1 of 2, the other is out of view
behind bleed air line)
Bleed air (anti-ice)
60
High Speed Shaft
Input Module
Gimbal
61
Oil Filler Cap
Oil Level
62
Variable Geometry Vane Links and Pins
5th State Bleed Air Port
Engine Anti-Ice Start Bleed Valve
63
Fire Detector
ECU
DECU
64
Inlet
65
Missing Deswirl Vanes
66
APU
Combustor
67
Heat Exchanger
Plenum Camber
Combustion Section
Air Cycle Machine
Air Inlet
J-Tube (Hidden)
Oil Cap/Level
Hydraulic Starter
Fuel Control
Water Separator
Generator
Modulating Valve
Thomas Coupling (Hidden)
68
ECS Compartment
Air Cycle Machine
Number 2 Driveshaft
Fire Extinguisher Line
Modulating Valve
J-tube
J-tube clamp
69
Tail Drive Shaft
Thomas Couplings
Fire Bottles
70
12 L A T C H E S
Upper UHF/VHF Antenna
ELT Antenna
71
Outside Air Temperature (OAT) Sensors
Antennas
Disco-ball ALQ-144 IR Jammer Mount
Chaff/Flare ALE-39 Dispenser Mount
TACAN Antenna
Fisheyes AAR-47 Missile Detectors
Pilot ATO compasses Flux-valves
Forward Datalink
AFT Datalink
Sonobuoy
ESM
Tail RAST Probe electrical connector
UHF/VHF/TACAN
Lower IFF
Sonobuoy
Doppler
RAST Probe port
ADF
Cargo Hook
Main RAST Probe light
Hover/Rescue Light
Fuel Dump Pipe
Starboard Mainmount
Radome
72
Antennas - cont.
Rotor Head Light
Upper Disco-ball ALQ-144 IR Jammer Mount
Cut outs for ALQ-144 Electrical Wires
UHF/VHF/IFF
GPS
Emergency Locator Transmitter (ELT)
HF Longwire