Q7-21.
If only one numerical designation is used for
BALANCE.--Correct balance of the tire, tube,
a tire, what does it refer to?
and wheel assembly is important. A heavy spot on an
aircraft tire causes that spot to always hit the ground
Q7-22.
Where is tire-marking information recorded
first upon landing. This results in excessive wear at the
after a tire change?
one spot and an early failure at that part of the tire. A
Q7-23.
What does R or TR followed by a number on a
severe case of imbalance may cause excessive vibration
tire indicate?
during takeoff and landing. This makes handling of the
aircraft difficult.
Q7-24.
All tubeless tires and tires with tubes must be
suitably vented to release trapped air if they
Nylon Flat Spotting
exceed what psi?
Q7-25.
How are vent holes marked on tubeless tires?
If the aircraft stands in one place under a heavy
static load for several days, local stretching may cause
Q7-26.
What type of damage is caused by sunlight?
an out-of-round condition with a resultant thumping
Q7-27.
A tire should be sent to AIMD or IMA if it
during takeoff and landing.
shows repeated pressure loss that exceeds
what percent of the correct operating pres-
Dual Installations
sure?
On dual-wheel installations, tires should be
Q7-28.
Tire slippage marks are what color?
matched according to the dimensions indicated in table
Q7-29.
How often should slippage marks on aircraft
7-1. Tires vary somewhat in size between man-
tires be inspected?
ufacturers and can vary a great deal after being used.
When two tires are not matched, the larger one supports
Q7-30.
What explosionproof, bead-breaking equip-
most or all of the load. Since one tire is not designed to
ment is intended for shipboard use?
carry this increase in load, a failure may result.
Q7-31.
An aircraft inner tube can still be reused up to
Table 7-1.--Tolerances for Diameters of Paired Tires in Dual
what maximum age?
Installations
Q7-32.
How are tubeless tires identified?
Tire Outside
Maximum Difference In
Q7-33.
During tire inflation, the setting on the
Diameter
Outside Diameters
pressure regulator should NEVER exceed
what psi?
Less than 18 inches
1/8 inch
Q7-34.
How often is a remote tire inflator assembly
18 to 24 inches
1/4 inch
required to be calibrated?
25 to 32 inches
5/16 inch
33 to 40 inches
3/8 inch
Q7-35.
After inflating an aircraft tire, what is the
41 to 48 inches
7/16 inch
minimum time you must wait before checking
49 to 55 inches
1/2 inch
for a detectable pressure loss?
56 to 65 inches
9/16 inch
Q7-36.
A nonserviceable tire that has been "H"
More than 65 inches
5/8 inch
coded is considered to be in what condition?
Q7-37.
What solution should be used to clean tires
Q7-17.
What part of the tire gives it tensil strength,
that have come into contact with grease, oil,
resistance to internal pressure, and the ability
and other harmful materials?
to maintain its shape?
Q7-38.
What will cause a tire to wear faster in the
Q7-18.
What is the most common tread pattern
center?
design used on naval aircraft tires?
Q7-19.
What term refers to a tire's maximum
AIRCRAFT TUBES
recommended load for a specific type of
service?
LEARNING OBJECTIVES: Recognize the
procedures for identifying aircraft tire tubes.
Q7-20.
What is the final nondestructive inspection
Identify the procedures for storing aircraft
method used for rebuilt tires?
7-22