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Boeing PB-1 Flying Fortress
Photo: Bain News Service · Wikimedia Commons · Public domain
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BoeingPB-1FlyingFortress

Strategic Bombers · United States · 1936
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BoeingPB-1FlyingFortress

Boeing PB-1 Flying Fortress
Boeing PB-1 Flying Fortress Photo: Bain News Service · Wikimedia Commons · Public domain
* Absolute score — assessed within category · no era adjustment
Payload
85
Range
80
Penetration / Survivability
70
Nuclear Capability
60
Stand-Off Capability
50
Avionics
40
Stealth
10
Reliability
75
Strategic Impact
90
Cost-Effectiveness
70
Origin United States
CategoryStrategic Bombers
EraInterwar Period
In service1936–1945
Operators8 countries
Quantity12,731
Data Quality88%
MASS(Military Archive Scoring System)
67
Strategic Bombers MASS Rating
1/25
Interwar Period
38/163
All-Time
Strategic Bombers · 10 axes scored
Payload
85
Range
80
Penetration / Survivability
70
Nuclear Capability
60
Stand-Off Capability
50
Avionics
40
Stealth
10
Reliability
75
Strategic Impact
90
Cost-Effectiveness
70
ⓘ Regardless of era, the same scoring system applies to all units in the strategic bombers category.
01 / Overview
Boeing PB-1 Flying Fortress
Production
1936–1945
Quantity
12,731
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
STRATEGIC BOMBERS · INTERWAR PERIOD
1
PERFORMANCE/PRICE
85
UNIT COST (2025 USD)
—
67
strategic bombers category
ⓘ Performance/Price and MASS score are computed across all units in the strategic bombers category, regardless of era.
02 / Specs & Design
◎General6MOD.6
  • First Flight1935
  • Service Entry Year1938
  • Crew10
  • Primary RoleStrategic bomber, transport, anti-submarine warfare, search and rescue
  • GenerationPiston-engine heavy bomber
  • In ServiceNo
◈Powerplant6MOD.6
▣Performance3MOD.3
  • Top Speed378 km/h
  • Service Ceiling10,850 m
  • Ferry Range3,219 km
◇Dimensions & Weights7MOD.7
  • Length22.66 m
  • Wingspan31.62 m
  • Height5.82 m
  • Wing Area131.92
  • Empty Weight16.391 kg
  • Loaded Weight24.494 kg
  • Max Takeoff Weight29.71 kg
◆Armament8MOD.8
⬢Production3MOD.3
  • Total Built12,731
  • Operators22
  • Variants13
▲Service History3MOD.3
  • Production Start1936
  • Production End1945
  • Operational StatusRetired from military service; small number in service as warbirds
03 / History
SERVICE LIFESPANRetired
  1. 1935Entered service
  2. 1936Production started
  3. 1939First deployment: World War II
  4. 1945Production ended
90
years in service
9
years in production
12,731
units produced
0
countries operating
ⓘ The producing country no longer actively operates it. 8 countries retired it.
04 / Operators
📖 TERMS ON THIS PAGE2terms
A collection of integrated electronic systems on a military aircraft designed to detect, identify, disrupt, or deceive enemy radar, communications, and guided weapons.
An internal compartment within a military aircraft designed to store and deploy weapons, reducing radar cross-section and aerodynamic drag.
These terms are listed automatically because they appear on this page.full encyclopedia →
📚 Sources
📖 ENCYCLOPEDIA Browse the Strategic Bombers entry →