Limitations
Pilot's Flight Manual
SCHWEIZER
Model 269C Helicopter
2-8
Reissued: 16 Jan 2019
2-9. POWER PLANT LIM I TA TIONS (LYCOMING HIO-360-D1A)
Max i mum con tin u ous power is 190 horse power at 3200 rev o lu tions
per min ute with 26.0 inches of man i fold pres sure (MP) at sea level.
This var ies lin early to 24.7 inches MP at 4200 feet al ti tude for stan -
dard day. Re fer to man i fold pres sure plac ard.
The min i mum rpm is 3000.
The range for en gine idle speed is 1200 to 1600 rpm.
With ro tor dis en gaged, avoid en gine idle speed in ex cess of 1600
rpm.
CAU TION
IF ENGINE RPM EX CEEDS 2000 RPM WITH
ROTOR DIS EN GAGED IN SPEC TION OF DRIVE
SHAFT IN AC COR DANCE WITH HMI AP PEN -
DIX B IS RE QUIRED BE FORE ANY FU TURE
OP ER A TION.
The ini tial clutch en gage ment speeds are 1500 to 1600 rpm.
Min i mum grade fuel = 100/130.
Lu bri cating oil rec om men da tions (see Ta ble 2-1).
Ta ble 2-1. SAE Oil Grades
Sin gle Mul ti ple Av er age Am bi ent
Vis cos ity Vis cos ity Air Tem per a ture
— 15W50 or 20W50 All Tem per a tures
60 — Above 80°F
50 — Above 60°F
40 — 30°F to 90°F
30 20W40 0°F to 70°F
20 20W30 Be low 10°F
This Document contains technical data subject to EAR. See WARNING and classifications on first page.
FAA Approved
CSP Book 1 CSP-C-1.indd 60 8/4/19 12:45 PM
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