Internal Load Operations

Question 1

Army model CH-47F is a ______ aircraft.

Answer 1

Army model CH-47F is a Class 1 aircraft.

Question 2

The cargo compartment is ___ inches long, __ inches wide, and __ inches high.

Answer 2

The cargo compartment is 366 inches long, 90 inches wide, and 78 inches high.

Question 3

Seating arrangement for __ fully equipped ground troops is provided by __ 3-man seats and __ 1-man seats.

A ____-pound capacity nylon web safety belt is provided for each seat occupant.

Answer 3

Seating arrangement for 32 fully equipped ground troops is provided by ten 3-man seats and two 1-man seats. A 2,000-pound capacity nylon web safety belt is provided for each seat occupant.

Question 4

The flooring, from STA ______ to _____ and from buttline _____ left to _____ right, rests
on rubber vibration isolators which reduce overall internal load vibrations

Answer 4

The flooring, from STA 200.00 to 400.00 and from buttline 44.00 left to 44.00 right, rests
on rubber vibration isolators which reduce overall internal load vibrations

Question 5

Uniformly Distributed Load Limits: Compartments C, D, and E are limited to ___ lbs psf

Answer 5

Uniformly Distributed Load Limits: Compartments C, D, and E are limited to 300 lbs psf

Question 6

The cargo loading ramp F, is limited to ___ lbs psf with a maximum total load of ____
pounds when the ramp is level with the cargo floor.

To avoid ramp damage, loads over ____ lbs require the uses of the ramp support jack.

Answer 6

The cargo loading ramp F, is limited to 300 lbs psf with a maximum total load of 3,000 pounds when the ramp is level with the cargo floor.

To avoid ramp damage, loads over 3,000 lbs require the uses of the ramp support jack.

Question 7

Concentrated Load Limits:

Answer 7

The treadways aft of STA 160.00 and ramp extensions are stressed for a total wheel load of 2,500 pounds. The treadways forward of STA 160.00 and the walkway can be loaded to a total wheel load of 1,000 pounds.

Question 8

Concentrated loads are not to exceed __ psi for pneumatic tires or __ psi for block or roller-type wheels

Answer 8

Concentrated loads are not to exceed 75 psi for pneumatic tires or 50 psi for block or roller-type wheels

Question 9

There are __ 5,000-pound capacity tiedown rings (__ in the fuselage floor and _ in the ramp floor) and __ 10,000-pound capacity tiedown fittings.

Answer 9

There are 87 5,000-pound capacity tiedown rings (83 in the fuselage floor and 4 in the ramp floor) and eight 10,000-pound capacity tiedown fittings.

Question 10

Load Planning

Compartment Loading:

Answer 10

Loading by compartments provides a rapid means of computing the CG of a load and can be used whenever the cargo load consists of a number of items. When using the compartment method, it is assumed that the weight of all the cargo in the compartment is concentrated at the centroid of the compartment.

Question 11

Load Planning

Station Loading:

Answer 11

Loading by stations provides a more precise method of computing the CG of a load and should be used whenever possible. Station loading requires that the CG
of each item placed in the helicopter coincides with a fuselage station number

Question 12

Shoring:

Answer 12

Shoring is used to protect the cargo floor and to distribute load pressure over a greater
area of the floor.

Question 13

Restraint Criteria:

Answer 13

the minimum acceptable factors for crew and passenger safety

Question 14

Warehouse Pallets:

Answer 14

Up to eight to ten warehouse pallets can be loaded into the helicopter.

Individual warehouse pallets may weigh up to 3,700 pounds. However, to maintain floor isolation, the sum of the weights of longitudinally adjacent pallets must not exceed 4,300 pounds.

Question 15

Reference:

Answer 15

Reference: TM 1-1520-271-10 Ch. 6

Question 16

COOLS

Answer 16

Cargo ON/OFF Loading System

Question 17

Cargo ON/OFF Loading System (COOLS):

Reference:

Answer 17

An internal cargo handling system is provided for quick loading, securing and unloading of palletized cargo. The cargo handling floor allows a cargo handling system to be installed on the aircraft all the time for in-flight mission changes as needed, reducing mission preparation time.

Reference: TM 1-1520-271-10-2 Ch. 4

Question 18

COOLS Pallet Types - The following pallet types may be used:

Answer 18

● Three 463L HCU-6/E pallets, 88 x 108 inches.
● Six 463L HCU-12/E or 463L HCU-10/C pallets, 54 x 88 inches.
● Up to ten warehouse wooden pallets, 40 x 48 inches.

Question 19

COOLS can be placed in any of four configurations as listed below:

Answer 19

1. Loading
2. Restraint
3. Flight
4. Unloading

Question 20

463L Pallet Locking:

Answer 20

There are six lock pawls installed on each actuation shaft. These lock pawls are configured to individually unlock each 463L pallet starting from the aft pallet, and
individually lock each 463L starting from the forward pallet.

Question 21

Shoring:

Answer 21

When used, shoring should extend at least a distance equal to the thickness of the shoring beyond the base of the item being supported.

Question 22

Cargo Classification:

Reference:

Answer 22

● Prepared cargo is carried in containers equipped with tie-down devices, or equipment with attached tie-down points.

● Miscellaneous cargo is all other cargo, or cargo without tie-down provisions.

Reference: TC 3-04.4 Ch. 2

Question 23

To calculate the number of tie-down devices required to restrain a load in any given direction, these factors must be known:

Answer 23

● Weight of cargo.

● Restraint criteria.

● Angle of tie-down and percent effectiveness of a tie-down device. The effectiveness of a tie-down device is determined from the percentage restraint chart (30 degrees ideal with 70% effectiveness)

● Rated strength of weakest link or component of a tie-down.