FAA Federal Aviation Regulations (FARS, 14 CFR)
FARs > Part 121 > Appendix C2 - C-46 Nontransport Category Airplanes - TABLES
Appendix C1 |
Appendix C3
1. The following performance limitation data, applicable to the Curtiss model C-46 airplane for cargo-only operation, must be used in determining compliance with §§121.199 through 121.205. These data are presented in the tables and figures of this appendix.
TABLE 1 -- TAKEOFF LIMITATIONS (a) Curtiss C-46 certificated for maximum weight of 45,000 pounds.
(1) Effective length of runway required when effective length is determined in accordance with §121.171 (distance to accelerate to 93 knots TIAS and stop, with zero wind and zero gradient). (Factor=1.00)
[Distance in feet]
------------------------------------------------------------------------
Airplane weight in pounds
-----------------------------
Standard altitude in feet 45,000
39,000 42,000 \1\
------------------------------------------------------------------------
S.L....................................... 4,110 4,290 4,570
1,000..................................... 4,250 4,440 4,720
2,000..................................... 4,400 4,600 4,880
3,000..................................... 4,650 4,880 5,190
4,000..................................... 4,910 5,170 5,500
5,000..................................... 5,160 5,450 5,810
6,000..................................... 5,420 5,730 6,120
7,000..................................... 5,680 6,000 6,440
8,000..................................... 5,940 6,280 (\1\)
------------------------------------------------------------------------
\1\ Ref. Fig. 1(a)(1) for weight and distance for altitudes above
7,000[foot].
(2) Actual length of runway required when effective length, considering obstacles, is not determined (distance to accelerate to 93 knots TIAS and stop, divided by the factor 0.85).
[Distance in feet]
------------------------------------------------------------------------
Airplane weight in pounds
-----------------------------
Standard altitude in feet 45,000
39,000 42,000 \1\
------------------------------------------------------------------------
S.L....................................... 4,830 5,050 5,370
1,000..................................... 5,000 5,230 5,550
2,000..................................... 5,170 5,410 5,740
3,000..................................... 5,470 5,740 6,100
4,000..................................... 5,770 6,080 6,470
5,000..................................... 6,070 6,410 6,830
6,000..................................... 6,380 6,740 7,200
7,000..................................... 6,680 7,070 7,570
8,000..................................... 6,990 7,410 (\1\)
------------------------------------------------------------------------
\1\ Ref. Fig. 1(a)(2) for weight and distance for altitudes above
7,000[foot].
(b) Curtiss C-46 certificated for maximum weight 48,000 pounds.
(1) Effective length of runway required when effective length is determined in accordance with §121.171 (distance to accelerate to 93 knots TIAS and stop, with zero wind and zero gradient). (Factor=1.00)
[Distance in feet]
------------------------------------------------------------------------
Airplane weight in pounds
---------------------------------------
Standard altitude in feet 48,000
39,000 42,000 45,000 \1\
------------------------------------------------------------------------
S.L............................. 4,110 4,290 4,570 4,950
1,000........................... 4,250 4,440 4,720 5,130
2,000........................... 4,400 4,600 4,880 5,300
3,000........................... 4,650 4,880 5,190 5,670
4,000........................... 4,910 5,170 5,500 6,050
5,000........................... 5,160 5,450 5,810 6,420
6,000........................... 5,420 5,730 6,120 6,800
7,000........................... 5,680 6,000 6,440 (\1\)
8,000........................... 5,940 6,280 6,750 (\1\)
------------------------------------------------------------------------
\1\ Ref. Fig. 1(b)(1) for weight and distance for altitudes above
6,000[foot].
(2) Actual length of runway required when effective length, considering obstacles, is not determined (distance to accelerate to 93 knots TIAS and stop, divided by the factor 0.85).
[Distance in feet]
------------------------------------------------------------------------
Airplane weight in pounds
---------------------------------------
Standard altitude in feet 48,000
39,000 42,000 45,000 \1\
------------------------------------------------------------------------
S.L............................. 4,830 5,050 5,370 5,830
1,000........................... 5,000 5,230 5,550 6,030
2,000........................... 5,170 5,410 5,740 6,230
3,000........................... 5,470 5,740 6,100 6,670
4,000........................... 5,770 6,080 6,470 7,120
5,000........................... 6,070 6,410 6,830 7,560
6,000........................... 6,380 6,740 7,200 8,010
7,000........................... 6,680 7,070 7,570 (\1\)
8,000........................... 6,990 7,410 7,940 (\1\)
------------------------------------------------------------------------
\1\ Ref. Fig. 1(b)(2) for weight and distance for altitudes above
6,000[foot].
TABLE 2 -- EN ROUTE LIMITATIONS 
(a) Curtiss model C-46 certificated for maximum weight of 45,000 pounds (based on a climb speed of 113 knots (TIAS)).
------------------------------------------------------------------------
Terrain
Weight (pounds) clearance Blower setting
(feet) \1\
------------------------------------------------------------------------
45,000................................ 6,450 Low.
44,000................................ 7,000 Do.
43,000................................ 7,500 Do.
42,200................................ 8,000 High.
41,000................................ 9,600 Do.
40,000................................ 11,000 Do.
39,000................................ 12,300 Do.
------------------------------------------------------------------------
\1\ Highest altitude of terrain over which airplanes may be operated in
compliance with § 121.201.
Ref. Fig. 2(a).
(b) Curtiss model C-46 certificated for maximum weight of 48,000 pounds or with engine installation approved for 2,550 revolutions per minute (1,700 brake horsepower). Maximum continuous power in low blower (based on a climb speed of 113 knots (TIAS)).
------------------------------------------------------------------------
Terrain
Weight (pounds) clearance Blower setting
(feet) \1\
------------------------------------------------------------------------
48,000................................ 5,850 Low.
47,000................................ 6,300 Do.
46,000................................ 6,700 Do.
45,000................................ 7,200 Do.
44,500................................ 7,450 Do.
44,250................................ 8,000 High.
44,000................................ 8,550 Do.
43,000................................ 10,800 Do.
42,000................................ 12,500 Do.
41,000................................ 13,000 Do.
------------------------------------------------------------------------
\1\ Highest altitude of terrain over which airplanes may be operated in
compliance with § 121.201.
Ref. Fig. 2(b).
TABLE 3 -- LANDING LIMITATIONS (a) Intended Destination.
Effective length of runway required for intended destination when effective length is determined in accordance with §121.171 with zero wind and zero gradient.
(1) Curtiss model C-46 certificated for maximum weight of 45,000 pounds. (0.60 factor)
Distance in feet
----------------------------------------------------------------------------------------------------------------
Airplane weight in pounds and approach speeds \1\ in knots
Standard altitude in feet ---------------------------------------------------------------
40,000 V50 42,000 V50 44,000 V50 45,000 V50
----------------------------------------------------------------------------------------------------------------
S.L............................................. 4,320 86 4,500 88 4,700 90 4,800 91
1,000........................................... 4,440 86 4,620 88 4,830 90 4,930 91
2,000........................................... 4,550 86 4,750 88 4,960 90 5,050 91
3,000........................................... 4,670 86 4,880 88 5,090 90 5,190 91
4,000........................................... 4,800 86 5,000 88 5,220 90 5,320 91
5,000........................................... 4,920 86 5,140 88 5,360 90 5,460 91
6,000........................................... 5,040 86 5,270 88 5,550 90 5,600 91
7,000........................................... 5,170 86 5,410 88 5,650 90 5,750 91
8,000........................................... 5,310 86 5,550 88 5,800 90 5,900 91
----------------------------------------------------------------------------------------------------------------
\1\ Steady approach speed through 50-foot height TIAS denoted by symbol V50.
Ref. Fig. 3(a)(1).
(2) Curtiss model C-46 certificated for maximum weight of 48,000 pounds. 1 (0.60 factor.)
Distance in feet
----------------------------------------------------------------------------------------------------------------
Airplane weight in pounds and approach speeds \2\ in knots
Standard altitude in feet ---------------------------------------------------------------
42,000 V50 44,000 V50 46,000 V50 43,000 V50
----------------------------------------------------------------------------------------------------------------
S.L............................................. 3,370 80 3,490 82 3,620 84 3,740 86
1,000........................................... 3,460 80 3,580 82 3,710 84 3,830 86
2,000........................................... 3,540 80 3,670 82 3,800 84 3,920 86
3,000........................................... 3,630 80 3,760 82 3,890 84 4,020 86
4,000........................................... 3,720 80 3,850 82 3,980 84 4,110 86
5,000........................................... 3,800 80 3,940 82 4,080 84 4,220 86
6,000........................................... 3,890 80 4,040 82 4,180 84 4,320 86
7,000........................................... 3,980 80 4,140 82 4,280 84 4,440 86
8,000........................................... 4,080 80 4,240 82 4,390 84 4,550 86
----------------------------------------------------------------------------------------------------------------
\1\ For use with Curtiss model C-46 airplanes when approved for this weight.
\2\ Steady approach speed through 50 height knots TIAS denoted by symbol V503.
Ref. Fig. 3(a)(2).
(b) Alternate Airports.
Effective length of runway required when effective length is determined in accordance with §121.171 with zero wind and zero gradient.
(1) Curtiss model C-46 certificated for maximum weight of 45,000 pounds. (0.70 factor.)
Distance in feet
----------------------------------------------------------------------------------------------------------------
Airplane weight in pounds and approach speeds \1\ in knots
Standard altitude in feet ---------------------------------------------------------------
40,000 V50 42,000 V50 44,000 V50 45,000 V50
----------------------------------------------------------------------------------------------------------------
S.L............................................. 3,700 86 3,860 88 4,030 90 4,110 91
1,000........................................... 3,800 86 3,960 88 4,140 90 4,220 91
2,000........................................... 3,900 86 4,070 88 4,250 90 4,340 91
3,000........................................... 4,000 86 4,180 88 4,360 90 4,450 91
4,000........................................... 4,110 86 4,290 88 4,470 90 4,560 91
5,000........................................... 4,210 86 4,400 88 4,590 90 4,680 91
6,000........................................... 4,330 86 4,510 88 4,710 90 4,800 91
7,000........................................... 4,430 86 4,630 88 4,840 90 4,930 91
8,000........................................... 4,550 86 4,750 88 4,970 90 5,060 91
----------------------------------------------------------------------------------------------------------------
\1\ Steady approach speed through 50 foot-height-knots TIAS denoted by symbol V50.
Ref. Fig. 3(b)(1).
(2) Curtiss model C-46 certificated for maximum weight of 48,000 pounds. 1 (0.70 factor.)
Distance in feet
----------------------------------------------------------------------------------------------------------------
Airplane weight in pounds and approach speeds \2\ in knots
Standard altitude in feet ---------------------------------------------------------------
42,000 V50 44,000 V50 46,000 V50 48,000 V50
----------------------------------------------------------------------------------------------------------------
S.L............................................. 2,890 80 3,000 82 3,110 84 3,220 86
1,000........................................... 2,960 80 3,070 82 3,180 84 3,280 86
2,000........................................... 3,040 80 3,150 82 3,260 84 3,360 86
3,000........................................... 3,110 80 3,220 82 3,340 84 3,440 86
4,000........................................... 3,180 80 3,300 82 3,410 84 3,520 86
5,000........................................... 3,260 80 3,380 82 3,500 84 3,610 86
6,000........................................... 3,330 80 3,460 82 3,580 84 3,700 86
7,000........................................... 3,420 80 3,540 82 3,670 84 3,800 86
8,000........................................... 3,500 80 3,630 82 3,760 84 3,900 86
----------------------------------------------------------------------------------------------------------------
\1\ For use with Curtiss model C-46 airplanes when approved for this weight.
\2\ Steady approach speed through 50 foot-height-knots TIAS denoted by symbol V50.
Ref. Fig. 3(b)(2).
(c) Actual length of runway required when effective length, considering obstacles, is not determined in accordance with §121.171.
(1) Curtiss model C-46 certificated for maximum weight of 45,000 pounds. (0.55 factor.)
Distance in feet
----------------------------------------------------------------------------------------------------------------
Airplane weight in pounds and approach speeds \1\ in knots
Standard altitude in feet ---------------------------------------------------------------
40,000 V50 42,000 V50 44,000 V50 45,000 V50
----------------------------------------------------------------------------------------------------------------
S.L............................................. 4,710 86 4,910 88 5,130 90 5,230 91
1,000........................................... 4,840 86 5,050 88 5,270 90 5,370 91
2,000........................................... 4,960 86 5,180 88 5,410 90 5,510 91
3,000........................................... 5,090 86 5,320 88 5,550 90 5,660 91
4,000........................................... 5,230 86 5,460 88 5,700 90 5,810 91
5,000........................................... 5,360 86 5,600 88 5,850 90 5,960 91
6,000........................................... 5,500 86 5,740 88 6,000 90 6,110 91
7,000........................................... 5,640 86 5,900 88 6,170 90 6,280 91
8,000........................................... 5,790 86 6,050 88 6,340 90 6,450 91
----------------------------------------------------------------------------------------------------------------
\1\ Steady approach speed through 50 foot-height-knots TIAS denoted by symbol V50.
Ref. Fig. 3(c)(1).
(2) Curtiss C-46 certificated for maximum weight of 48,000 pounds. 1 (0.55 factor.)
Distance in feet
----------------------------------------------------------------------------------------------------------------
Airplane weight in pounds and approach speeds \2\ in knots
Standard altitude in feet ---------------------------------------------------------------
42,000 V50 44,000 V50 46,000 V50 48,000 V50
----------------------------------------------------------------------------------------------------------------
S.L............................................. 3,680 80 3,820 82 3,960 84 4,090 86
1,000........................................... 3,770 80 3,910 82 4,050 84 4,180 86
2,000........................................... 3,860 80 4,000 82 4,140 84 4,280 86
3,000........................................... 3,960 80 4,090 82 4,240 84 4,380 86
4,000........................................... 4,050 80 4,190 82 4,340 84 4,490 86
5,000........................................... 4,150 80 4,290 82 4,450 84 4,600 86
6,000........................................... 4,240 80 4,400 82 4,560 84 4,710 86
7,000........................................... 4,350 80 4,510 82 4,670 84 4,840 86
8,000........................................... 4,450 80 4,620 82 4,790 84 4,960 86
----------------------------------------------------------------------------------------------------------------
\1\ For use with Curtiss model C-46 airplanes when approved for this weight.
\2\ Steady approach speed through 50 foot-height-knots TIAS denoted by symbol V50.
Ref. Fig. 3(c)(2).
   
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