Cessna SEB00-7: Serial and Model-Year Cross-Check

Manufacturer effectivity as corroborating evidence

A bulletin table and a type certificate answer related but different questions. The presence of a serial in a broad range must be read with explicit exclusions and special assignments, rather than used as a reason to erase an authority-listed exception.

Understanding the Cessna 150 range overrides

The serial guide highlights 15064970, which must resolve to A150M rather than 150G, and A1500433, which must resolve to A152 rather than A150L. Both demonstrate why arithmetic interval matching alone is insufficient. A reliable reference preserves the ordinary range and the exception together.

These assignments do not establish a complete history of either aircraft. They identify the model assignment that should accompany the serial. Calendar manufacture dates, delivery dates and subsequent registration chains remain separate research questions.

Using the bulletin reference responsibly

Owners and mechanics can use the source reference to follow the evidence behind a serial table. It does not mean the bulletin is installed equipment, proof of a completed action or an airworthiness directive. Any task or compliance question requires the relevant controlling document and aircraft records.

For a purchase enquiry, write down the complete serial, the model assigned by the type certificate and any different year or boundary shown in the manufacturer table. Ask for the aircraft records needed to explain the difference. Do not turn a model-year discrepancy into a guessed manufacture date, or change an identity simply to fit a convenient interval. Keeping the ordinary range and its exceptions together makes the next document search more precise.