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Keystone PK-1
Photo: USN · Wikimedia Commons · Public domain
REC // INTEL FEED

KeystonePK-1

Intelligence / Recon Aircraft · United States · 1928
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KeystonePK-1

Keystone PK-1
Keystone PK-1 Photo: USN · Wikimedia Commons · Public domain
* Absolute score — assessed within category · no era adjustment
Sensor Capability
10
Endurance
30
Operating Altitude
20
Range
25
Stealth / Survivability
5
Data-Link
0
Coverage
15
Persistence
20
Technology
10
Cost-Effectiveness
60
Origin United States
CategoryIntelligence / Recon Aircraft
EraInterwar Period
In service1928–1938
Operators2 countries
Quantity18
Data Quality85%
16
Intelligence / Recon Aircraft MASS Rating
112/135
Interwar Period
357/419
All-Time
Intelligence / Recon Aircraft · 10 axes scored
Sensor Capability
10
Endurance
30
Operating Altitude
20
Range
25
Stealth / Survivability
5
Data-Link
0
Coverage
15
Persistence
20
Technology
10
Cost-Effectiveness
60
ⓘ Regardless of era, the same scoring system applies to all units in the intelligence / recon aircraft category.
01 / Overview
Keystone PK-1
Production
1928–1938
Quantity
18
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
INTELLIGENCE / RECON AIRCRAFT · INTERWAR PERIOD
112
PERFORMANCE/PRICE
38
UNIT COST (2025 USD)
—
16
intelligence / recon aircraft category
ⓘ Performance/Price and MASS score are computed across all units in the intelligence / recon aircraft category, regardless of era.
02 / Specs & Design
◎General4MOD.4
  • Base AirframePN-12
  • Mission TypePatrol
  • Service Entry Year1928
  • Flight Crew5
◈Powerplant2MOD.2
  • Engine TypeWright R-1820 Cyclone
  • Number of Engines2
◇Armament (ASW/Strike)2MOD.2
◆Production2MOD.2
  • Total Built18
  • Operators1
▤Service History4MOD.4
  • Retirement Year1938
  • Production Start1928
  • Production End1938
  • Operational StatusRetired
03 / History
SERVICE LIFESPANRetired
  1. 1928Production started
  2. 1938Production ended
98
years in service
10
years in production
18
units produced
0
countries operating
ⓘ 2 countries retired it.
04 / Variants
▚ WEAPON FAMILY
PN-12 1928
Keystone PK-1 1928
// SIBLING VARIANTS
PD-1 1928
05 / Operators
Operator Countries2country
📚 Sources
📖 ENCYCLOPEDIA Browse the Intelligence / Recon Aircraft entry →