REFERENCES:

A. NAVAIR 13-1-6.3, SEAT SURVIVAL KITS
B. NAVEDTRA 12318, AVIATION STRUCTURAL MECHANIC E 1 & C
C. NAVEDTRA 10401, AVIATION STRUCTURAL MECHANIC "E" 2
D. NAVEDTRA 10380, AIRCREW SURVIVAL EQUIPMENTMAN 2
E. NAVEDTRA 12011-A, AVIATION MAINTENANCE RATINGS SUPERVISOR

125.1 STATE THE PURPOSE AND SAFETY CONSIDERATIONS OF AN EJECTION SEAT. (REF. C)

THE EJECTION SEAT PROVIDES CONVENIENT ENTRY INTO THE EGRESS SYSTEM IN THE COCKPIT DURING NORMAL OPERATION. THE ESCAPE SYSTEM PROVIDES THE AIRCREW WITH A SAFE, QUICK AND EFFICIENT MEANS OF ESCAPE DURING AN EMERGENCY WITH MINIMUM RISK OF INJURY. EJECTION SEATS PROVIDE AUTOMATIC ESCAPE AT ZERO ALTITUDE AND ZERO AIRSPEED, AND AT VARIOUS SPEEDS DURING FLIGHT. ALWAYS ENSURE SAFETY PINS ARE INSTALLED PRIOR TO ENTERING A COCKPIT. ALL MAINTENANCE PERSONNEL WILL BE GIVEN A THOROUGH EJECTION SEAT CHECKOUT BY A QUALIFIED AME.

125.2 STATE THE PURPOSE OF THE FOLLOWING ITEMS OF AN EJECTION SEAT. (REF C)

A. TIME RELEASE MECHANISM (TRM) - ALLOWS DELAY OF PARACHUTE DEPLOYMENT UNTIL PROPER ALTITUDE.

B. DROGUE GUN - DEPLOYS THE DROGUE CHUTE TO STABILIZE EJECTION SEAT AND OCCUPANT DURING DESCENT.

C. INERTIA REEL ASSEMBLY - LOCKS PILOT TO SEAT AT SPECIFIC "G" DURING FLIGHT AND RETRACTS PILOT INTO THE EJECTION SEAT DURING EJECTION TO PREVENT INJURY.

D. ROCKET MOTOR INITIATOR - PROVIDES THE FIRING SOURCE FOR THE ROCKET MOTOR.

E. SAFE/ARM HANDLE - SAFE OR ARM EJECTION SEAT BEFORE OR AFTER FLIGHT.

125.3 DEFINE NACES. (REF B)

NAVAL AIRCREW COMMON EJECTION SEAT. COMMONLY USED IN FA-18C
LOT #13 AND UP.

125.4 STATE THE PRIMARY PURPOSE OF THE ENVIRONMENTAL CONTROL SYSTEM. (REF. C)

TO PROVIDE COMBINED PRESSURIZATION AND AIR CONDITIONING OF THE AIRCRAFT CABIN DURING FLIGHT.

125.5 STATE THE THREE TYPES OF CANOPIES AND SAFETY CONSIDERATIONS FOR EACH TYPE. (REF. A)

A. CLAMSHELL CANOPY SYSTEM (F-14/F/A-18) - MOST COMMON

B. SLIDING CANOPY SYSTEM (A-6)

C. HINGED CANOPY SYSTEM (A-7) - LEAST COMMON

CANOPY SYSTEMS CONTAIN CARTRIDGE ACTUATED DEVICES (CADS), AND THE STRICTEST PRECAUTIONS SHALL BE ADHERED TO WHEN WORKING ON OR AROUND THESE SYSTEMS. ALL MAINTENANCE PERSONNEL SHALL HAVE A CURRENT EJECTION SEAT CHECKOUT (WHICH INCLUDES THE CANOPY SYSTEM) BY A QUALIFIED AME. UNDER NO CIRCUMSTANCES SHALL ANYONE ENTER THE COCKPIT AREA WHEN THE APPLICABLE PINS/SAFETY DEVICES ARE NOT INSTALLED.

125.6 STATE THE PURPOSE OF THE EGRESS SYSTEM CHECKOUT CERTIFICATION PROGRAM. (REF E)

SYSTEM CHECKOUT MUST BE GIVEN BY A QUALIFIED AME TO ALL NEW MAINTENANCE PERSONNEL BEFORE THEY PERFORM ANY MAINTENANCE, EVERY 6 MONTHS THEREAFTER AND AGAIN IF THEY ARE OUT OF MAINTENANCE FOR 90 DAYS.

125.7 DESCRIBE THE TWO TYPES OF OXYGEN USED IN NAVAL AVIATION. (REF A)

A. GASEOUS (TYPE I) - USED COMMONLY IN LARGE AIRCRAFT WHERE SPACE AND WEIGHT ARE OF LESS IMPORTANCE.

B. LIQUID (TYPE II) - USED MOSTLY IN SMALL JET AIRCRAFT WHERE SPACE MUST BE KEPT TO AN ABSOLUTE MINIMUM. THESE SYSTEMS ARE USED CONSTANTLY.

125.8 EXPLAIN THE OPERATION OF THE ONBOARD OXYGEN GENERATING SYSTEM (OBOGS) SYSTEM. (REF. C)

A. CONCENTRATOR
B. MONITOR
C. PLENUM

THE CONCENTRATOR PRODUCES OXYGEN-RICH GAS BY PROCESSING AIRCRAFT ENGINE BLEED AIR THROUGH TWO SIEVE BEDS AND IS SENT INTO THE OBOGS PLENUM. OXYGEN MONITOR SENSES THE PRESSURE AND PURITY OF OXYGEN IN THE PLENUM AND IF NECESSARY, SENDS WARNING TO PILOT IF DEFICIENCY EXISTS.

125.9 EXPLAIN THE PHYSIOLOGICAL EFFECTS OF HIGH ALTITUDE FLIGHT COULD HAVE ON FLIGHT PERSONNEL BECAUSE OF DECREASED ATMOSPHERIC PRESSURE. (REF. C)

THE HIGHER THE ALTITUDE THE AMOUNT OF OXYGEN PER UNIT OF VOLUME OF AIR DECREASES (HYPOXIA); THEREFORE OXYGEN INTAKE IS REDUCED. UNLESS THE INDIVIDUAL BREATHES ADDITIONAL OXYGEN, THE EYES, THE BODY, THE BRAIN AND THE MUSCLES WILL FAIL (COMPLETE LACK OF OXYGEN WHICH CAUSES DEATH. (ANOXIA).

125.10 STATE THE FIVE MAJOR PARTS OF A PARACHUTE AND THEIR FUNCTIONS. (REF. D)

A. PILOT PARACHUTE - ANCHORS ITSELF IN THE AIRSTREAM DURING THE DEPLOYMENT PHASE OF THE PARACHUTE, AND PULLS THE REMAINING COMPONENTS OUT OF THE PARACHUTE PACK.

B. MAIN CANOPY - OFFERS A LARGE, AIR-RESISTING (OR DRAG) SURFACE AND PROVIDES THE DECELERATION NECESSARY TO ALLOW FOR THE SAFE DESCENT OF AN AIRCREWMAN.

C. SUSPENSION LINES - FORM A NET (OR SKELETON) FOR THE MAIN CANOPY AND ABSORB MUCH OF THE OPENING SHOCK LOAD DURING DEPLOYMENT.

D. CONTAINER - HOUSES AND PROTECTS THE PILOT'S PARACHUTE, MAIN CANOPY AND SUSPENSION LINES.

E. HARNESS - HOLDS THE PARACHUTE TO THE WEARER. ABSORBS THE LARGEST PART OF THE OPENING SHOCK.

125.11 STATE THE CONTENTS OF A SKU SERIES SEAT SURVIVAL KIT. (REF A)

1-MAN LIFE RAFT, FLARES, DRINKING WATER, CANDY (FOR ENERGY), SPONGE (USE FOR BAILING AND FISHING), FIRST AID, SUN BLOCK, EMERGENCY OXYGEN (20 MIN SUPPLY). URT-33 RADIO MOUNTED UNDER LEFT LEG.

125.12 DESCRIBE THE TWO BASIC AUTOMATIC PARACHUTE ACTUATORS.
(REF. D)

A. AUTOMATIC PARACHUTE RIPCORD RELEASE - A BAROMETRICALLY CONTROLLED PYROTECHNIC DEVICE. ITS FUNCTION IS TO OPEN A PARACHUTE AUTOMATICALLY DURING EJECTION, AT A PRESET ALTITUDE.

B. BALLISTIC SPREADER GUN - A PYROTECHNIC DEVICE WHICH, DURING EJECTION, WILL RAPIDLY OPEN THE PARACHUTE CANOPY BY PROPELLING THE SUSPENSION LINES OUTWARD IN A 360 DEGREE SPREAD.

125.13 EXPLAIN THE DIFFERENT SIZES OF LIFE RAFTS THAT ARE USED IN NAVAL AVIATION. (REF D)

7, 15 AND 25-MAN. 25-MAN LIFE BOAT HAS A RAMP AND CANOPY.

125.14 EXPLAIN THE AIR/WATER TEMPERATURE REQUIREMENTS FOR MANDATORY WEARING OF ANTI-EXPOSURE ASSEMBLIES. (REF D)

IT'S AT CO'S DISCRETION, BUT USUALLY AT 50-60O WATER TEMPERATURE, AND ABOVE 32O AIR TEMPERATURE. IT IS MANDATORY AT BELOW 50O WATER TEMPERATURE AND 32O OR BELOW AIR TEMPERATURE (WITH WIND CHILL FACTOR).