plainly its a mistake on the model type as that serial number is not associated with the 280f model as its a 280 its eBay after all
X - Model F-28F/280F Helicopter, 3 PCLH, Approved December 31, 1980 (See NOTE 14)
(Models F-28F/280F are similar to F-28C/280C except for increased horsepower engine, improved turbocharger and the addition of throttle correlator.)
Engine
Fuel
Engine limits RPM limits
F28F Airspeed limits (IAS)
Lycoming HIO-360-F1AD with Rajay Model 325E10-2 or Rotomaster Model 3BT5EE10J2 turbocharger per STC SE484GL and Bendix RSA-5AB1, Parts Number 2524858-A, -1, -2, -3, or -4 fuel injector.
100/130 min. or 100LL min. grade aviation gasoline.
For all operations: 3050 rpm, 39.0 in. Hg manifold pressure (225 hp.)
Engine (Power On) 3050 maximum; 2900 minimum Rotor (Power Off) 385 maximum; 332 minimum
Never Exceed Speeds - Miles Per Hour
Press. Alt.
Outside Air Temperature, °F.
-20 0 20 40 60 80 100
SL 2000 4000 6000 8000 10000 12000
112
112
112
112
107
94 76
112 112 112 112 112 112 111 106 102 92
84 74 65 56
112 112 112 112 112 112 109 105 110 105 100 91 100 90 81 73
82 73 64 55 65 55
280F Airspeed limits (IAS)
Never Exceed Speeds - Miles Per Hour
Press. Alt.
Outside Air Temperature, °F.
-20 0 20 40 60 80 100
SL 2000 4000 6000 8000 10000 12000
117 117 117 117 117 117 117 116 112 107
99 88
81 70 60
117 117
117 117
117 115
111 105
117 117 117 117 114 109 110 105 96
96 87 78
96 87
78 69 60 78 69 59
Altitude limits C.G. limits
Maximum weight No. of seats Maximum baggage Fuel capacity
Oil capacity (engine sump)
Control System Rigging Stabilizer Setting
12,000 ft. density altitude.
Longitudinal:
Lateral:
(+92.0) to (+94.6) at 2350 lbs.
(+92.0) to (+100.0) at 2000 lbs.
See Flight Manual for schedule with weight.
Maximum approved asymmetric moment +3700 to -3250 in.-lbs. at 2350 lbs. See Flight Manual for schedule with weight.
2350 lbs.
3 (+62.0)
108 lb. (+135.0)
42 gal. (+96.7), 40 gal. usable. See NOTE 1
10 qts. (+96.0) See NOTE 1 for data on undrainable oil.
Refer to Maintenance Manual. Fixed, 6° TE up relative to WL.
Serial Nos. eligible F-28F Models: 506, 507, and 509 thru 743 (See NOTE 29) 280F Models: 1212, 1500 and subsequent (See NOTE 29)