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APPENDIX

Readings Manually Recorded During Second Series of tests 1/

A: Altitude at commencement of  buffeting (feet)
B: Altitude at which recovery was effected (feet)
C: Total loss of altitude (feet)
D: Altitude lost during recovery 2/ (feet)
E: Maximum rate of descent (feet per minute)
F: Stabilized rate of descent (feet per minute)
G: R.P.M. at which propeller pitch control was set to govern
H: R.P.M. setting to which propeller pitch control was advanced prior to application of full power
I: Highest indicated R.P.M.
J: Inches manifold pressure used until buffeting condition was reached
K. Indicated air speed during approach to stall (miles per hour)
L: Indicated air speed on entering buffeting condition (miles per hour)
M: Minimum indicated air speed (miles per hour
N: Propeller pitch angle during approach to stall (degrees)
O: Propeller pitch angle when buffeting commenced (degrees)
P: Propeller pitch angle during descent (degrees)
Q: Maximum propeller pitch during recovery (degrees)

|[[test]]| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | p | Q |
|First test|6,000|5,000|1,000|50|1,900|1,300|2,050|  |2,300|25|80|60|45 /3|25|24|30|33|
|Second test|5,300|4,900|400|50|1,400| |2,050|2,450|2,600|  |80|65| |24 1/2|18|22|26|
|Third test|5,300|4,800|500|0|1,300|1,000|2,250|  |2,600|  |80|65| |20|18 1/2|25|29|
|Fourth test|5,300|5,100|200|20|1,100| |2,250|2,450|2,800|22|80| | |21|18|22|23|
|Fifth test|5,700|5,300|400|30|1,000|400|2,450|  |  |20|80| | |18|18|23|24|
|Sixth test|5,800|5,300|500|0|1,600| |2,050|  |2,280|25|80 | | |24|28|28 to 23|22|

1/ Due regard must be had to the possibility of inaccuracy of the instruments as a result of the severe vibration.

2/ The period from the time that the nose was lowered until recovery was completed.

3/ See Footnote 1 above. It is unlikely that the airspeed actually reached this extremely low rate.

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