Logging different aircraft types
Thread Starter
Logging different aircraft types
I'm not a spotter but, if "a friend" was keeping a list of aircraft types flown what would you all count as different types?
Would a 737-200 be different from a 737-300 as pretty much different aircraft?
Would a 737-300 be different from a 737-400 as variants of the same type?
How about DC9/MD80/B717?
F28 vs F100?
Then there are light aircraft C150, C152 are fairly close, but with different names, PA28-160 is fairly different from PA28-161 to fly.
How do you all define a new type?
Would a 737-200 be different from a 737-300 as pretty much different aircraft?
Would a 737-300 be different from a 737-400 as variants of the same type?
How about DC9/MD80/B717?
F28 vs F100?
Then there are light aircraft C150, C152 are fairly close, but with different names, PA28-160 is fairly different from PA28-161 to fly.
How do you all define a new type?
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Not being a pilot I usually rely on the ICAO. If they have allocated a separate designator then that inidicates there is sufficient difference in performance ( for ATC ) or ground-ops that a distinction is required.
For example separate C150 and C152 designators were issued on account of the change, I believe, from the Continental to Lycoming engine and related change in carb-icing behaviour which might affect how they can maintain an altitude. However no disctinction was made between the Commuter and Aerobat variants, though those would be quite different for a pilot!
On the other hand both the 777F and 777-200LR are classed as B77L since they both fly the same and have identical apron profiles, though that might surprise a handling team at the destination who turned-up with steps for the freighter.
For example separate C150 and C152 designators were issued on account of the change, I believe, from the Continental to Lycoming engine and related change in carb-icing behaviour which might affect how they can maintain an altitude. However no disctinction was made between the Commuter and Aerobat variants, though those would be quite different for a pilot!
On the other hand both the 777F and 777-200LR are classed as B77L since they both fly the same and have identical apron profiles, though that might surprise a handling team at the destination who turned-up with steps for the freighter.
I’ve logged every one for what it was eg Pa28-140/160/180 and so on.
But counted as only one type.
You generally don’t count the variants.
Unless they’ve had significant modifications.
Under FAA rules of it has a different Type Certificate Data Sheet it will officially be a different type.
I suspect though that the “ace of the base” types count all variants as different types.
But counted as only one type.
You generally don’t count the variants.
Unless they’ve had significant modifications.
Under FAA rules of it has a different Type Certificate Data Sheet it will officially be a different type.
I suspect though that the “ace of the base” types count all variants as different types.
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In my passenger log I differentiate NEW TYPEs with NEW SUB TYPEs. But, for some of the reasons given above, even that isn't always crystal clear. I guess you just have to make your own rules as you go along! 
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I'm not talking a flying logbook here, but when people have flown (in) 500 types have they counted Reims F172 as a different type from Cessna 172? They are differentiated in the ICAO Docs. There is a very grey line sometimes between a variant and a type. As it would be for an unofficial log I'm more interested in what others do as there can be no correct answer.
I'm not talking a flying logbook here, but when people have flown (in) 500 types have they counted Reims F172 as a different type from Cessna 172? They are differentiated in the ICAO Docs. There is a very grey line sometimes between a variant and a type. As it would be for an unofficial log I'm more interested in what others do as there can be no correct answer.
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I would think Eric Brown's list would set a good example!
I would think Eric Brown's list would set a good example!
