Cessna 150G Model Reference

Generation and Certification

The historical record describes cabin refinement and float-related development, while the propeller and loading records retain separate configuration conditions. A float-related value is not an upgrade to every 150G landplane. For buyers and mechanics, the correct combination of identity, installed configuration and approval records is more useful than a single generic model specification.

For 1967, the 150G change record identifies an alternator, a wider cabin, heating/defroster changes and optional floats. This follows the F's electric-flap and swept-tail redesign rather than repeating that introduction. The alternator distinction matters for electrical-system research, while cabin and heater changes matter to the installed equipment and occupant environment. The standard landplane remains in the 1,600-lb group. Optional float approval creates a separate configuration enquiry; it does not make the sea weight or float propeller a generic G-model specification.

Serial Numbers and Production

For 150G, the ordinary source assignments are 1967: 15064533 through 15067198 (excluding 15064970). The serial guide retains source conflicts and exceptional identities alongside these intervals.

Engine, Propeller and Equipment Changes

The G-model propeller evidence separates the landplane application from approved-seaplane conditions. Read that distinction alongside the two weight-and-balance groups before comparing an aircraft that has operated on floats with one that has always been a landplane. A previous float installation may be a records and configuration question even when the aircraft is currently on wheels. The source also records a Model 22-374-series Weston-Garwin Carruth altimeter AD lead among G-model equipment examples. Applicability depends on the actual unmodified instrument, not on the presence of a 150G data plate.

The 150G factory installation groups specify 1967: O-200-A, 100 hp at 2750 RPM. Its named propeller applications are 69CK family / 1A100/MCM6950 / 1A101/DCM6950; 1A90/CF. Their diameter, static-RPM and configuration conditions are preserved together below.

Specifications, Fuel and Loading

The normal G-model interval contains an explicit exclusion: 15064970 belongs to A150M. This is more than a historical curiosity because a numeric-only lookup would otherwise assign the wrong legal model and category. The 1967 performance entries must stay with the ordinary G identity and their own power/altitude conditions. The published 975-lb Standard and 1,060-lb Commuter empty weights are comparison examples rather than loading evidence for the excluded aircraft. Use the correct legal model before selecting a certified-limit or handbook group, even when the serial appears comfortably inside the G endpoints.

The ordinary G range must exclude 15064970 before it is used for an aircraft identity count or technical assignment. The exception is not a special G-model year; it redirects to the A150M legal identity. This distinguishes it from a short special serial whose year simply remains unresolved. The D397 handbook lineage, land/sea propeller separation and alternator/heating history then become relevant only after the ordinary G identity is established. For a former float aircraft, records connecting the approved sea configuration and any return to land operation are more useful than assuming that the G's optional-float history makes both weight groups simultaneously applicable.

Performance and Comparison Conditions

One published 150G example is 1967 cruise speed: 120 mph (power % 75; altitude ft 7500). The table keeps each metric's year, units, power, altitude, fuel and reserve columns together. Use the performance guide to distinguish headline comparisons from handbook operating calculations; no unreported condition is supplied for 150G.

Manuals, Maintenance and Research

The D397-13 handbook family retains a documented distinction from the later D397-1 lineage. A similar publication number in a listing does not settle revision or effectivity. For a G-model buyer, a productive records review connects that handbook question with the alternator installation, cabin-heating system, land/sea configuration and actual altimeter identification. The following 150H continues the swept-tail generation, but its shorter available performance coverage is not a reason to backfill H-model operating values from this G page. Exact model identity remains the basis for choosing the next technical reference. The positive 150G publication leads are 1967: D397-13 family (Owner's Manual).