KISS WAG SWAG PDC

150/152 even 200 ft/nm is shallow, but most light aircraft
and many jets with an engine out can't do it at altitudes
above 5,000 feet.


--
James H. Macklin
ATP,CFI,A&P

wrote in message
news:AJYuf.6585$V.412@fed1read04...
| Jim Macklin wrote:
| Standard climb gradients are based on 150'/ NM (if I
| remember correctly) and if a departure is greater than
that,
| it will be noted on the chart. FAR 135 and 121 require
that
| the most adverse performance be considered when
operating,
| gross weight must be reduced to meet the performance
| requirement. Often you will see airliners with half the
| seats empty because the airplane can't meet the take-off
| requirements.
|
| I did not say it very well the first time.
|
|
|
| Departures are standard if they do not exceed 200 feet per
mile.
|
| Missed approach surfaces are 40:1, which is 152 feet per
mile. That is
| probably the 150 per mile you're thinking of. The current
FAA thinking
| is that a missed approach requires 200 feet per mile, and
the AIM so
| states. (AIM 5-4-20 b)
|
| One-engine climb gradient requirements apply on the
commercial
| operators. (121.189 for air carriers). But, the air
carrier, under
| 121.189, is not required to look at the missed approach
procedure's
| entire area of protected airspace. If the carrier finds
that will not
| penalize them they are free to simply accept the missed
approach as a
| missed-approach OEI flight path.
|
| As you know, the 121.189 issues are far more pronounced on
departure
| than they are on the typical missed approach.