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Boeing WC-135W Constant Phoenix Atmospheric Collection Variant

The Boeing WC-135W Constant Phoenix was the legacy U.S. Air Force atmospheric-collection variant of the KC-135 family. Modified from C-135 platforms, it collected particulate and gaseous effluents for nuclear-detection and treaty-monitoring missions before the Air Force transitioned its two-aircraft WC-135W fleet to three WC-135R aircraft in 2023.

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Identity

Aliases
WC-135W Constant PhoenixWC-135WConstant PhoenixWC-135C/W
Family Name
Boeing WC-135W Constant Phoenix
Full Name
Boeing WC-135W Constant Phoenix Atmospheric Collection Variant
Roles
militaryreconnaissance
Status
retired
Type
aircraft

Details

Aircraft Specs
Configuration
fixed_wing
Cruise Speed Kph
648
Max Speed Kph
648
Max Takeoff Mass Kg
136,304
Operating Modes
land
Range Km
7,408
Service Ceiling M
12,192
Takeoff Landing Capabilities
conventional
Description
The Boeing WC-135W Constant Phoenix was the legacy U.S. Air Force atmospheric-collection variant of the KC-135 family. Modified from C-135 platforms, it collected particulate and gaseous effluents for nuclear-detection and treaty-monitoring missions before the Air Force transitioned its two-aircraft WC-135W fleet to three WC-135R aircraft in 2023.
Manufacturer
Parent Vehicle Family
Propulsion Configurations
  • Entries
    • Nested value
    Name
    WC-135W TF33-P-5 installation
    Notes
    The U.S. Air Force identifies four Pratt & Whitney TF33-P-5 turbofans with thrust reversers on the WC-135W Constant Phoenix.

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Creation Time
August 14, 2026 at 05:34:48 UTC
Updated Time
August 14, 2026 at 05:42:14 UTC