Data Quality84%
MASS(Military Archive Scoring System)
ⓘ Regardless of era, the same scoring system applies to all units in the tactical / medium bombers category.
01 / Overview
Keystone LB-6
Category
Country
Production
1929–1929
Quantity
17
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
TACTICAL / MEDIUM BOMBERS · INTERWAR PERIOD
116
PERFORMANCE/PRICE
75
UNIT COST (2025 USD)
—
ⓘ Performance/Price and MASS score are computed across all units in the tactical / medium bombers category, regardless of era.
02 / Specs & Design
◎General6MOD.6
- First Flight1927
- Service Entry Year1929
- Crew4
- Primary RoleLight bomber
- GenerationBiplane
- In ServiceYes
◈Powerplant6MOD.6
- Engine TypeWright Cyclone R-1750-1 radial engines
- Engine ModelWright R-1750-1 Cyclone
- Number of Engines2
- AfterburnerNo
- SupercruiseNo
- Thrust VectoringNo
▣Performance6MOD.6
- Top Speed183 km/h
- Cruise Speed153 km/h
- Service Ceiling3,550 m
- Ferry Range1,017 km
- Rate of Climb180 m/s
- G-Limit3.5
◇Dimensions & Weights7MOD.7
- Length15.01 m
- Wingspan23 m
- Height5.5 m
- Wing Area106.38
- Empty Weight3,186 kg
- Loaded Weight6,100 kg
- Max Takeoff Weight5,900 kg
◆Armament8MOD.8
- Hardpoints0
- Weapons Payload1,400 kg
- Internal Gun2x .30 cal machine guns
- Internal Weapons BayNo
- Air-to-Air MissilesNo
- Air-to-Ground MissilesNo
- Anti-Ship MissilesNo
- Nuclear CapableNo
▤Avionics & Stealth8MOD.8
⬢Production3MOD.3
- Total Built17
- Operators1
- Variants12
▲Service History4MOD.4
- Retirement Year1934
- Production Start1929
- Production End1929
- Operational StatusRetired
03 / History
SERVICE LIFESPANStill in Service
- 1929Production started
97
years in service
0
years in production
17
units produced
1
countries operating
ⓘ The producing country still actively operates it.
05 / MASS Score
TACTICAL / MEDIUM BOMBERS RANKING Tactical / Medium Bombers · Interwar Period
MASS RANKINGSMASS ↗
253TACTICAL / MEDIUM BOMBERS116INTERWAR PERIOD · TACTICAL / MEDIUM BOMBERS2667UNITED STATES · ALL WEAPONS104PERFORMANCE/PRICE · TACTICAL / MEDIUM BOMBERS
ⓘ Rankings are within theTactical / Medium Bomberscategory.
📚 Sources