Table 2-1. Hour/Mileage Standards - Continued

Table 2-2. Inspection Standards - Continued

Item

Inspection standard

Electrical system

holders, insulators, field coils and insulation of all rotating equipment; throttle or controller

or equipment - Cont.

contacts, air operated contactors, reverser, relays, voltage and load regulators and interlocks of

the control for breaking, chafing, cracks, bared wires, loose connections as well as correct

operation.

Engine

See appropriate technical manual for inspection criteria.

Fenders

Must be firmly attached and free of rattles, breaks or tears.

Feet

Check for any loose or missing feet on sheeps foot rollers.

Filters, air,

Must have been recently serviced (refer to applicable TM).

oil, water

Fire control,

Check all instruments for completeness and general appearance. The painted surfaces shall be

general

free of bare spots. Windows shall not be cracked or broken. Rubber eyeshields headrests

and bellows shall not be torn or deteriorated. Seals shall be intact. There shall be no evidence

of moisture internally. Level vials will be intact and all graduations legible. There shall be no

signs of corrosion. Numbers, lettering, and engraving on name plates, scales, and indices will

be clearly defined and all pertinent decals shall be intact All instrument lights and lighting

devices will light when activated.

Azimuth indicator

The azimuth indicator shall be firmly seated in place and the reset knobs shall function smoothly.

Ballistics computer

The super-elevation handcrank, range correction knob and ammunition selector handle shall

function smoothly. Output and input shaft shall not be bent. Rotation of rheostat knob shall

cause light intensity to vary from dim to bright. All meters and knobs on electronic computers

shall be intact and operative. Cords and cables of electronic computers shall not be worn or

frayed and will be properly anchored. Plugs and sockets shall be clean and plug caps in place

when plugs are not in use.

Ballistics drive

Qualifying plates shall be intact with graduations clearly legible. Linkage shall be firmly attached.

Telescope and

Headrest assembly shall be adjustable. The outside shield shall open and close. Clamping

periscope mounts

screw assemblies shall function properly. All knobs, latches, and slip scales shall function

smoothly. All latches shall produce definite locking action. If mount possesses cross-leveling

and elevation knobs, the movements shall be smooth and even over entire range.

Periscope and

The headrest shall hold firmly when clamped. The head assemblies shall be intact and rigidly

sights

secured to the body portion. All optics shall be free of defects that may affect the field of view.

All eyepieces shall function smoothly. The boresight knobs shall function smoothly when

engaged.

Elevation quandrant

All counters will function smoothly throughout their range. Receptacles, cable, and lamp assemblies

will not be damaged. The movements of cross-leveling and elevation knobs shall operate

smoothly.

Range finders

The headrest shall be complete and function smoothly. Eyepieces will operate smoothly. The

interpupillary knob shall function properly. Boresight knobs and auxiliary boresight knobs shall

function smoothly without friction or looseness. All locking levers shall lock effectively. The

range knob shall function smoothly throughout its entire travel. Filter lever shall introduce the

filters to both left and right optical systems. With range finder energized at 24volt power, the

ranging pips, boresight reticles, and range scale shall be illuminated and clearly visible. The

toggle switches shall function as indicated on the instrument. When viewing through the

eyepieces of the range finder, there shall be no obstruction to the field of view. All external

optics will be free of defects that may affect the optional performance of the instrument.

Infinity sight

The rheostat will function properly when the instrument is connected to a 24-volt direct current

source and control the illumination of the reticle. The azimuth and elevation adjusting scress

and corresponding knobs will rotate freely.

Telescopes

The boresight knobs shall function smoothly. The boresight knobs shall lock effectively. If the

telescope is articulated, the head of the instrument shall function smoothly. All external optics

will be free of defects that would affect optical performance. When viewing through the

eyepiece, there shall be no internal obstruction to the field of view. The eyepiece will function

smoothly. Dovetailed slots and illumination windows shall be clean in regard to dirt and paint.

Reflex sights

The power plug shall not be damaged and the cap shall be securely fastened to the housing by the

chain. The azimuth and elevation eccentric locking screws shall rotate freely. The sight shall

be securely held in the desired position when the eccentric locking screws are tightened. The

amount shall be free to slide off the dovetail lug and shall be securely attached to the sight

assembly when the locking lever is loosened or tightened.

Computing sights

The speed knobs shall indicate positive detent action when rotates throughout their limits of travel.

The graduation marks shall align at each detent stop. The computer drive and climb bail shall

move in either direction and hold in position of the bail shall not be disturbed when the speed

knobs are rotated. The computer positioning handwheel shall operate in either