Ec-18b C-18a Aircraft Parts

(Page 19) End item NSN parts page 19 of 23
Part Number
NSN
NIIN
009550157
170100-022 O-ring
004190742
1706121 Retaining Ring
005981474
1713-15 Diode Semiconductor Device
008500561
172934-001 Electromagnetic Relay
008843407
17331 Incandescent Lamp
001557784
17351-300 Sleeve Spacer
003292504
1737351-21 Machine Screw
000598255
175-4 Hexagon Slotted Plain Nut
001768115
175-5 Hexagon Slotted Plain Nut
001768114
175095-001 Rotary Selector
010140878
1754570-19 Shim
008040465
175S4 Hexagon Slotted Plain Nut
001768115
175S5 Hexagon Slotted Plain Nut
001768114
176042 Self-aligning Plain Bearing
010308773
177004PC128 Machine Screw
009484038
1775238 Airframe Ball Bearing
000420901
17917 Retaining Ring
001665633
1793-120 O-ring
002500231
1793-124 O-ring
002651074
Page: 19

Aircraft, C-18a, Ec-18b

Picture of Ec-18b  C-18a Aircraft

The Boeing C-137 Stratoliner was a VIP transport aircraft derived from the Boeing 707 jet airliner used by the United States Air Force. Other nations also bought both new and used 707s for military service, primarily as VIP or tanker transports. In addition, the 707 served as the basis for several specialized versions, such as the E-3 Sentry AWACS aircraft. The designation C-18 covers several later variants based on the 707-320B/C series.

USAF procurement of the Boeing 707 was very limited, amounting to three Model 707-153s designated VC-137A. When delivered in 1959 these had four 13,500 lb (6123 kg) dry thrust Pratt & Whitney J57 (JT3C6) turbojets; when subsequently re-engined with 18,000 lbf (80.1 kN) dry thrust TF33-P-5 (JT3D) turbofans they were redesignated VC-137B. Only one other variant served with the USAF: this was the VC-137C Air Force One presidential transport, the two examples of which were Model 707-320B Intercontinentals with specialized interior furnishings and advanced communications equipment. Two further non-presidential C-137C aircraft were later added.

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