(7)
A 10-hour run consisting of alternate periods in the lower gear ratio of one hour at rated maximum continuous power with maximum continuous speed, and onehour at60percent rated maximum continuouspower and84.5percent maximum continuous speed.

(8)
A 10-hour run consisting of alternate periods in the lower gear ratio of one hour at rated maximum continuous power with maximum continuous speed, and onehour at50percent rated maximum continuouspower and79.5percent maximum continuous speed.

(9)
A 20-hour run consisting of alternateperiods in the lowergear ratio of 2 hours at rated maximum continuous power with maximum continuous speed, and twohours at maximumbest economy cruisingpower and speed or at maximum recommended cruising power.

(10)
A 5-hour run in the lower gear ratio at maximum best economy cruising

power and speed or at maximum recommended cruisingpower and speed. Where simulated altitude test equipment is not available when operating in the highergearratio,the runsmaybe madeatthe observedhorsepowerobtained with the critical altitude manifold pressure or speci.ed percentages thereof, and the fuel-air mixtures may be adjusted to be rich enough to suppress detonation.
(d) Helicopter engines. To be eligible for use on a helicopter each engine must either comply with paragraphs (a) through (j) of Sec. 29.923 of this chapter, or must undergo the following series of runs :
(1)
A 35-hour run consisting of alternate periods of 30 minutes each at rated takeo. power with takeo. speed, and at rated maximum continuous power with maximum continuous speed.

(2)
A25-hour run consistingof alternateperiods of21/2hours each at rated maxi-mum continuous power with maximum continuous speed, and at 70 percent rated maximum continuouspower with maximum continuous speed.

(3)
A25-hour run consistingof alternateperiods of21/2hours each at rated maxi-mum continuous power with maximum continuous speed, and at 70 percent rated maximum continuouspower with 80 to90percent maximum continuous speed.

(4)
A 25-hour run consisting of alternateperiods of21/2hours each at80percent rated maximum continuouspowerwith takeo.speed, and at80percent rated maximum continuouspower with80to90percent maximum continuous speed.

(5)
A 25-hour run consisting of alternateperiods of21/2hours each at80percent rated maximum continuous power with takeo. speed, and at either rated maximum continuous power with 110 percent maximum continuous speed or at rated takeo.power with 103percent takeo. speed, whichever resultsin the greater speed.

(6)
A 15-hour run at 105 percent rated maximum continuous power with 105 percentmaximum continuous speed or atfull throttle and corresponding speed at standard sealevel carburetorentrancepressure,if105percent of the rated maximum continuouspoweris not exceeded.

′
Elodie Roux. Septembre 2003
Subpart D : Block Tests; Reciprocating Aircraft Engines
(e) Turbosupercharged engines. For engines incorporating a turbosupercharger the follo-wing apply except that altitude testing may be simulated provided the applicant shows that the engine and supercharger are being subjected to mechanical loads and operating temperatures noless severe thanif run at actual altitude conditions :
(1)
For engines used in airplanes the applicant must conduct the runs speci.ed in paragraph(b) of this section, except–

(i)
The entire run speci.edinparagraph(b)(1) of this section mustbe made at sea level altitude pressure;

(ii)
[Theportions ofthe runs speci.edinparagraphs(b)(2) through(7) of this section at rated maximum continuouspower mustbe made at critical altitude pressure, and the portions of the runs at other power must be made at 8,000 feet altitude pressure; and]

(iii) The turbosupercharger usedduring the150-hour endurance test mustbe run on the bench for an additional 50 hours at the limiting turbine wheel inletgas temperature androtational speedfor rated maximum continuous power operation unlessthelimitingtemperature andspeed are maintained during 50 hours of the rated maximum continuous power operation.
　
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本文鏈接地址：FAA規章 美國聯邦航空規章 Federal Aviation Regulations 5(132)