| Model Number |
Shaft H/P |
Weight(lbs) |
Notes |
| PT6A-6 |
550 |
284 |
The PT6A-6 is the
basic model in the PT6 Turboprop Series. |
| PT6A-6A |
550 |
284 |
The PT6A-6A is similar
to the basic model, but incorporates provisions for reversing propeller. |
| PT6A-6B |
550 |
284 |
Similar to the basic
model, incorporating reversing mechanism, and using the PT6A-20 linkages. |
| PT6A-11 |
500 |
317 |
The PT6A-11 is a de-rated
PT6A-21. |
| PT6A-11AG |
500 |
317 |
Same as PT6A-11, intended
for agricultural use. |
| PT6A-15AG |
680 |
315 |
Similar to the PT6A-27/28,
intended for agricultural use. |
| PT6A-6/C20 |
550 |
289 |
The PT6A-6/C20 is
the designation for the PT6A-6 engines brought up to PT6A-20 standards.
|
| PT6A-20 |
550 |
289 |
Similar to the basic
model having a max. continuous rating equal to T/O rating. |
| PT6A-20A |
550 |
289 |
Similar to the PT6A-20
with different exhaust port configuration & optional reversing system.
|
| PT6A-20B |
550 |
289 |
Similar to the PT6A-20
except for optional reversing system. |
| PT6A-21 |
550 |
330 |
The PT6A-21 is basically
a de-rated PT6A-27. |
| PT6A-25 |
550 |
330 |
Similar to the PT6A-21,
except for inverted flight modifications, optional torque controller
and aluminum castings. |
| PT6A-25A |
550 |
330 |
Similar to the PT6A-25,
with magnesium castings in place of aluminum castings. |
| PT6A-25C |
550 |
330 |
Similar to the PT6A-25,
utilizing a PT6A-34 hot section,PT6T-3B Stage 1 compressor blades,
long inducer propeller,PT6A-100 large bore reduction gears and PT6A-25A
installation features - Rated same as PT6A-34. |
| PT6A-27 |
680 |
315 |
Similar to the basic
model featuring higher ratings, revised engine parts and integrated
reversing mechanism. |
| PT6A-28 |
680 |
315 |
Similar to the PT6A-27,
with higher ITT limits. |
| PT6A-29 |
750 |
315 |
The PT6A-29 is similar
to the basic model, but features higher ratings and has revised Stage
1 reduction gearing. |
| PT6A-34 |
750 |
331 |
Similar to the PT6A-27,
but has a compressor turbine similar to the PT6T-3 for higher ratings.
|
| PT6A-34B |
750 |
331 |
Same as PT6A-34 except
for aluminum major castings in place of magnesium alloy. |
| PT6A-34AG |
750 |
331 |
The agricultural version
of the PT6A-34. |
| PT6A-36 |
750 |
331 |
Similar to the PT6A-34
having increased ITT limits. |
| PT6A-38 |
750 |
380 |
The PT6A-38 is a de-rated
PT6A-41. |
| PT6A-40 |
750 |
404 |
Similar to the PT6A-42,
except for increased flat rating and manual fuel control override.
|
| PT6A-41 |
850 |
403 |
The PT6A-41 is an
engine model which features a modified compressor and 2-stage power
turbine for higher ratings. |
| PT6A-41AG |
850 |
403 |
The agricultural version
of the PT6A-41. |
| PT6A-42 |
850 |
403 |
Similar to the PT6A-41
except for increased cruise rating and increased ITT limits with improved
compressor reduced loss exhaust ducts. |
| PT6A-45 |
1120 |
423 |
The PT6A-45 is similar
to the PT6A-41 with increased reduction gearing for higher ratings.
|
| PT6A-45A |
1173 |
423 |
Same as PT6A-45 with
increased T/O ratings and ITT limits. |
| PT6A-45B |
1173 |
423 |
Similar to the PT6A-45A
except for increased augmentation fluid flow for T/O rating to a higher
inlet temperature. |
| PT6A-45R |
1197 |
423 |
Similar to the PT6A-45B
except for provision for automatic power increase from Alt. T/O power
to T/O power. |
| PT6A-50 |
1120 |
580 |
The PT6A-50 is similar
to the PT6A-45A with a new reduction gearbox. |
| PT6A-60 |
1050 |
475 |
The PT6A-60 is an
up-rated PT6A-42, featuring a new Stage 1 compressor gas producer
turbine from the PT6A-65, and gearbox from the PT6A-45. |
| PT6A-60A |
1050 |
475 |
Similar to the PT6A-60
except for upgraded altitude performance. |
| PT6A-61 |
850 |
429 |
Basically a PT6A-60
with a PT6A-42 gearbox. |
| PT6A-61A |
850 |
429 |
Upgraded PT6A-60 for
up-rated altitude performance. |
| PT6A-62 |
950 |
475 |
Similar to the PT6A-60,
but is de-rated to 950 SHP - used on the Pilatus PC-9. |
| PT6A-64 |
700 |
456 |
700 456 Similar to
the PT6A-66 - de-rated with a Max. ITT of 1472 degrees. |
| PT6A-65AG |
1300 |
486 |
Agricultural version
of the PT6A-65. |
| PT6A-65AR |
1424 |
486 |
Similar to the PT6A-65R
except for up-rated maximum continuous power rating. |
| PT6A-65AR |
1424 |
486 |
Similar to the PT6A-65R
except for up-rated maximum continuous power rating. |
| PT6A-65B |
1173 |
481 |
The PT6A-65B is similar
to the PT6A-45 except for an additional axial compressor stage and
increased diameter gas producer turbine wheel. |
| PT6A-65R |
1376 |
481 |
The PT6A-65B is similar
to the PT6A-45 except for an additional axial compressor stage and
increased diameter gas producer turbine wheel. |
| PT6A-65R |
1376 |
481 |
The PT6A-65R is identical
to the PT6A-65B except for reverse T/O rating. |
| PT6A-66 |
850 |
470 |
The PT6A-66 is the
basic free turbine turbo-propulsion engine model. This engine can
be overhauled or maintained as three modules. |
| PT6A-67 |
1200 |
506 |
Has a max ITT of 1544
degrees with a T/O output speed of 1700 rpm. |
| PT6A-67A |
1200 |
506 |
Similar to the PT6A-67
with a Max. ITT of 1562 degrees. Used on the Beech Starship. |
| PT6A-67AF |
1100 |
506 |
Flat-rated PT6A-67
used on the Conair/IMP Turbo-Firecat. |
| PT6A-67B |
1200 |
517 |
Similar to the PT6A-67A,
with a Max. ITT of 1472 degrees. |
| PT6A-67CF |
1650 |
517 |
The PT6A-67CF is a
growth version of the -67AF and is flat-rated to 1650 shp. |
| PT6A-67D |
1279 |
515 |
Similar to the PT6A-67A,
but is higher rated. Maximum ITT is at 1571 degrees. |
| PT6A-67R |
1424 |
515 |
Similar to the PT6A-67,
but with a max. ITT of 1571 degrees. Also includes provisions for
automatic power increases from Alt. T/O power to T/O power. |
| PT6A-110 |
475 |
321 |
Similar to the PT6A-11
except for the introduction of the PT6A135 reduction gearbox. |
| PT6A-112 |
500 |
321 |
Similar to the PT6A-27,
except that it incorporates PT6A41 fuel system concepts and PT6A-135
RGB. |
| PT6A-114 |
600 |
337 |
Similar to the PT6A-135
with a single port exhaust and PT6A-41 fuel system, PT6A-135 RGB.
|
| PT6A-116 |
700 |
320 |
Similar to the PT6A-135
except for reduced T/O and max. continuous power & torque limit, and
with PT6A-121 externals. |
| PT6A-121 |
615 |
316 |
Similar to the PT6A-21
except for a PT6A-136 RGB and PT6A-112 Power Turbine. |
| PT6A-135 |
750 |
320 |
Similar to the PT6A-36
except for new reduction gearbox and higher cruise rating. |
| PT6A-135A |
750 |
320 |
Similar to the PT6A-135
except for an increased thermodynamic capability compressor. |
