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HSL 41 Preflight. Preflight “Gouge”. This is a guide to assist you in you preflight and identification of components. This is not a substitute of NATOPS. OBJECTIVES. Preflight Requirements What to look for CAUTIONS, WARNINGS, & NOTES. BEFORE YOU START.

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Preflight gouge
Preflight “Gouge”

  • This is a guide to assist you in you preflight and identification of components.

  • This is not a substitute of NATOPS.


OBJECTIVES

  • Preflight Requirements

  • What to look for

  • CAUTIONS, WARNINGS, & NOTES


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?


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.


PREFLIGHT YOUR EQUIPMENT

  • Flight Suit (dog tags?)

    • Make sure you are FOD free

  • Helmet

    • Lip light? Clean Visors?

  • Gloves

    • No holes

  • Flashlight


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.


GETTING STARTED

  • Initial walk around

    • Look at the aircraft for anything that looks out of place.

    • “Man, that just ain’t 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?


WHEN IN DOUBT

  • If something doesn’t 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


DOWNING AN AIRCRAFT

  • If you don’t feel it is safe, don’t fly it!

  • Maintenance Control can tell you if a gripe is up or down by checking the MIM’s (Maintenance Instruction Manuals).

  • QA is always there to help.

    • Make sure the question is answered to your satisfaction!


Preflight

PREFLIGHT…..

NATOPS ITEMS

ADDITIONAL ITEMS


Seat Harness

ELT

Seat Track


FLIR HCU

Flight Controls


Wave Guide Bottles

Selector Valve

WPS- Select A or B

Radar Pressure Pop out


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

Search/Hover Lights

ESM

Antenna

RADALT Antennas


Drive Shaft Covers

Electrical Equipment

Compartment

Engine

Exhaust

APU

Exhaust

Gravity

Refuel

Water wash

Static

Ports

ESM

Antenna

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



Strut

Brake Lines

Grounding Wire

(Hidden)

Brake PUK Indicators

Tire Condition


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


Lower position.

Anti-collision Light

Data Link

Antenna

UHF/TACAN

Antenna

Block I, UHF/VHF/TACAN

Antenna


Pylon Fold Hinges position.

Lockpin

Keeper


Oil Cap position.

IGB Cowling

Cap Lock

Oil Level


Stab Lockpins position.

Keeper

Tail Bumper


Stabilator position.

Isolator

Mount

Position

Sensor

Arm

Actuator

Arm/Rod

Forward Spar

Forward Spar Web


Anti Collision Light position.

Position Light

AAR-47

Stab Position Link

Stab Actuator

Static Wicks


De-Ice Harness position.

Pitch Change

Links

Bonding Wire

Indexer

Retracted

Pitch Change Shaft

Pitch Beam

Tail Rotor Blades


TGB Oil Cap position.

Balancing

Weight Location

TGB Cowling

Pitch Beam

Retainer Nut


Anti-collision position.

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)


Tail Rotor position.- Cont.

Pitch Beam

Retainer Nut

Index Actuator

Indexer

shown in

extended position.

Check retracted

Pitch Change

Beam

Blade De-ice

Connector

Pitch Change

Shaft



Abrasion strips and de-ice boots position.

TGB Oil Level

T/R Tip Cap


Disconnect Jaws position.

Tail Driveshaft

Disconnect Spring

Thomas Coupling

Viscous Damper


Underside position.of blades

6

5

4

Critical Fasteners


Transition Section position.

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)


Ice Detector position.

(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


Sono Launcher Bottle position.

RAST Backup

Messenger Cable

Distributor Lock

First Aid

Kit

Crash Axe

Hoist

Pendant

Fire

Extinguisher

RAST

Equipment

Sono Launcher

Selector Valve

APU Pump

Handle


Cabin position.

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


APU Accumulator position.

Min 2650 PSI

Winterization Kit

Xsmn PDI


Hover Grip position.

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


Hydraulics Bay position.- 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


Hydraulics Bay position.- cont.

SAS

Actuator

Boost

Servo

SAS

Retaining

Nut

Redundant

Link

Forward


Hydraulics Bay position.- cont.

Torque Shaft Lever

Upper Support

Bearings (under

boots)


Hydraulics Bay - position.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


Hydraulics Bay - position.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


Main Rotor Head position.

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


Thrust position.

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


Pitch Lock Pins position.

Main Rotor Blade

Elastomeric Bearing

BIFILAR

Absorber

Weight


Balance Weight position.

Attachment Arm

Blade Fold Lock Pins

Top of Blades

Anti-Flap Stop

BIM Indicator

Blade Fold Motor


Main Rotor position.

Hub Assembly

Damper

Anti-Flap Stop

Pitch Change Horn

Pitch Lock Actuator

Droop Stop

Heated Droop

Stop Harness

PCRs


Accumulator Pressure position.

1200 PSI minimum


Lower Pressure Plate position.

Rotating Scissors

Swashplate

Forward Xmsn/Rotor


Oil Filler Cap position.

Xmsn Dip Stick

Gust Lock Indexer

Rotor Brake Disc

Aft Xmsn/Rotor


OLD Pitch Control Rod position.

Pitch Control Rod

New with elastomeric bearing


Transmission oil cooler access
Transmission Oil Cooler Access position.

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


Engine Compartment position.

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


Engine Compartment position.- 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


Engine Compartment position.- 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)


Engine Compartment position.- cont.

Combustion

Section

Mount

Struts

Deswirl Duct Clamp


Engine Compartment position.- 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)


High Speed position.

Shaft

Input

Module

Gimbal


Oil Filler Cap position.

Oil Level


Variable Geometry Vane Links and Pins position.

5th State Bleed Air Port

Engine Anti-Ice &

Start Bleed Valve


Fire Detector position.

ECU

DECU


Inlet position.



Oil cap position.

Bleed air

APU Generator

Bleed air

Exhaust

Pipe

Starter

Fire Detector

(1 of 1)

Inlet Screen

APU

Combustor


Heat position.

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)


Forward position.

ECS Compartment

Air Cycle

Machine

Number 2

Driveshaft

Fire

Extinguisher

Line

Modulating

Valve

J-tube

J-tube clamp


Tail Drive Shaft position.

Thomas Couplings

Fire Bottles


12 position.

L

A

T

C

H

E

S

Upper UHF/VHF

Antenna

ELT Antenna


Outside Air position.

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

AFT

Datalink

Forward

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


Antennas - position.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


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