Reims FRA150L vs FRA150M: Engines, Serials and Flight Manuals

The Reims FRA150L and FRA150M are French-built Acrobatic models with Rolls-Royce Continental O-240 engine applications. The FRA150L covers the 1972-1974 model period; the FRA150M covers 1975-1977. Their relationship is not adequately explained by calling them French 150L and 150M aircraft: the certified model entries, engine suffixes, serial eligibility and approved flight manuals distinguish the two Reims Aerobats.

Model identity and conditional serial eligibility

The FRA150L model approval is dated December 3, 1971, and the FRA150M approval October 8, 1974. Those dates identify the model approvals rather than the individual production dates. The French models belong to the A13EU type-certificate context. The Reims certification guide explains why the U.S. 150-family certificate cannot simply replace it.

The FRA150L entry covers FRA1500121 through FRA1500261. It also includes FA1500121 through FA1500261 when equipped with FKA150-2311 and FKA150-2316. The FRA150M entry covers FRA1500262 through FRA1500336, with the corresponding FA1500262 through FA1500336 eligibility subject to those same two kit conditions. Keep the conditional wording attached to the FA serials: a serial in that range alone does not establish the FRA configuration.

This is a practical purchase issue. Obtain the data plate identity and the records establishing the installed configuration, rather than treating FA and FRA as interchangeable advertisement abbreviations. The aircraft-identity guide provides the broader records sequence, while the FRA150 development guide places these models in the French production history.

O-240-A and O-240-E are not one undifferentiated engine

The FRA150L entry specifies the O-240-A rated at 130 hp. The FRA150M entry includes O-240-A or O-240-E, with the O-240-E distinction between 130 hp for takeoff and 123 hp continuous. Do not describe every FRA150M as having an O-240-E, or use the takeoff rating as though it were a continuous cruise setting. Identify the installed engine and use the applicable operating information.

The O-240 engine guide explains the engine family and rating distinction. Engine power alone does not establish aircraft climb rate, takeoff distance or cruise speed. A stock U.S. O-200-powered 150 performance row is not a substitute for the relevant Reims aircraft data, and a percentage increase in horsepower is not a valid percentage improvement in flight performance.

Shared propeller family, separate application checks

The propeller application entries identify the McCauley 1A135/BRM7150 for both models. That common model does not prove the fitted propeller's identity, condition or conformity. Read the hub identification and records and connect the installation to the aircraft and engine application. The 1A135/BRM7150 reference retains the application details rather than treating every propeller used on a 150-shaped airframe as equivalent.

This comparison does not assign a performance advantage from a propeller family name. Nor does it establish different baggage, fuel or weight limits from the later M suffix. Those questions need the aircraft's applicable approved information; differences in serial and manual application are already sufficient reasons to keep the models distinct.

Different approved flight manuals

The handbook-applicability entries identify D1015-13GB for the FRA150L and D1056-13GB for the FRA150M. Their stated model periods and serial effectivity follow the respective FRA ranges. These are separate SGAC-approved flight-manual references, not two cover titles for an assumed universal Reims handbook.

The Reims manuals guide explains the wider publication relationships. Check the actual document, its revisions and supplements against the aircraft being inspected, particularly when the identity depends on a kit-equipped FA airframe. A reference to a manual in a catalog helps locate it; it does not prove that the seller's copy or aircraft has the required configuration.

What a buyer can conclude

The L-to-M change gives a buyer specific questions about model period, engine suffix, conditional serial identity and manual coverage. It does not justify assuming that the later aircraft is universally faster, more capable or easier to maintain. Compare the actual records and condition, resolve the installed configuration, and obtain the applicable operating documents before interpreting numerical limits. The Reims history connects this focused comparison to the broader F150, FA150, FRA150 and later F152/FA152 relationships.