SCENARIO
The company has been engaged to complete an aerial-work charter flight overwater from YABC to YBZZ (island). The flight will be completed in a Bell Long Ranger B-206L.
The main requirement is that 8kg boxes of Durian fruit are transported to YBZZ. Loadmasters are required to be on board the aircraft to ensure the safe delivery of the fruit at YBZZ.
YBZZ HLS is within a confined area.
Although packaged well this cargo is unacceptably odoriferous. Though unconventional you resolve to carry the boxes as an external sling load. This will ensure the cabin environment is not
compromised causing an external threat to the essential crew members on board.
Flight Planning Data: Bell B 206L Long Ranger YABC-YBZZ Data
Total Distance 191nm
Weather for flight 10kt tail wind, Area QNH 980, Sky Clear
Cruising Altitude 7500’ AMSL
YABC HLS Elevation 2500’ AMSL, OAT +350
c, QNH 980
YBZZ HLS Elevation 6000’ AMSL
(No TAF forecast available. Within the same area forecast area)
ARFOR – Environmental Lapse Rate ISA
Loading Data
Bell Long Ranger- Basic Empty Weight 1020.6Kg
Oil 5.9Kg
Pilot x 1 80Kg
Life raft x 1 secured to a row 2 seat 85Kg
Loadmasters x 2 seated in the rear 85Kg – per Loadmaster
Crew baggage 69Kg – Stowed in Baggage compartment
Cargo – Sling Load To be determined
Planned Fuel at take off 360 Liters (Turbine Fuel)
Company Fuel Policy CAAP: 234
Variable reserve 15%
Fixed reserve 20mins
FLIGHT PLANNING QUESTIONS
Please provide for assessment your solutions including your detailed calculations and reasoning
methods. Complete with reference to the B206L flight manual extract.
Rotary Wing Assignment – V1.0 / 09.2017 pg. 3
QUESTION ONE
Considering the actual and expected environmental conditions at both the departure HLS and
arrival HLS. You will be required to hover out of ground effect (assume nil wind). What are the
weight limitations that will necessarily apply to both the departure and arrival locations?
QUESTION TWO
Considering the environmental conditions forecast. Calculate the Flight Fuel Required to cruise
from YABC to YBZZ. (Ignore hovering, climbs and descents).
Total Distance 191nm
Weather for flight 10kt tail wind, Area QNH 980, Sky Clear
Cruising Altitude 7500’ AMSL
QUESTION THREE
Given the loading data below. Will the Helicopter remain within center of gravity limits for the
entire flight? Provide a load sheet that shows the center of gravity conditions throughout the
flight.
Loading Data
Bell Long Ranger- Basic Empty Weight 1020.6Kg
Oil 5.9Kg
Pilot x 1 80Kg
Life raft x 1 on a row two seat 85Kg
Loadmasters x 2 seated in the rear 85Kg – per Loadmaster
Crew baggage 69Kg – Stowed in Baggage compartment
Planned Fuel at take off 360 Litres (Turbine Fuel) (288kg)
QUESTION FOUR
To maximize the load that can be carried in the sling and comply with center of gravity
limitations you resolve to move 30kgs from the baggage compartment and secure it to the row
two seats. You defuel 60 liters from the aircraft to maximize the payload possible.
Given the hovering performance limitations for departure and arrival what is the maximum
number of 8kg boxes that may now be transported in the sling?
Note: Sling Loads have no arm therefore do not affect the center of gravity.

Sample Solution

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