Systems & Limitations Flashcards
What is /the basic operating weight of a B727-200
104,500 lbs
What does ‘certificated’ mean in the phrase certificated weight?
Structural
What is ‘zero fuel’?
Weight of plane with no usable fuel.
When over limit, reducing payload is the only fix
What is the standard landing degree setting for flaps on a B727-200?
Flaps at 30º
What is the fuel capacity?
51,500 lbs
What are the dimensions of a B727?
Length - 153’2”
Wingspan - 108’
What does the APU provide?
- Electricity
- Air for engine start
- Air for air conditioning
Can you dispatch aircraft with APU inoperative?
Yes, provided external power cars are available at ALL airports
Can you dispatch aircraft with APU missing?
Yes. Weight and balance must be adjusted
How are you alerted of a APU fire?
- Bell/light in the Flight Deck
- Warning horn in nose wheel well
- Flashing red light in left wheel well
What is the altitude limitation with both air conditioning packs inoperative (unpressurized)?
≤ 10,000’ MSL
What is ‘CPD’?
Cabin Pressure Differential
Cabin Pressure - Ambient Pressure = CPD
What is the max normal CPD?
8.6 PSI
What is the max pressure differential for takeoff/landing?
.125 PSI
What is the typical flight length?
150-1800nm
What is the max cruise speed?
Mach .90
What is the max cruise altitude?
42,000’
What is the max payload?
31,500 lbs
What is the max pax capacity?
136 (14 First Class, 122 coach)
What is the max cargo capacity?
21,000 lbs
What is an “APU’?
Auxiliary Power Unit. Designed to be used on the ground only.
The gas turbine engine for the APU is located in the _____ wheel well.
Main
APU provides _____, _____, and _____ .
Electricity, Air for engine start, air for air conditioning
APU power start comes from _____.
NICAD Battery
APU fuel flow is _____ lbs/hr.
270
The air conditioning has _____ units (packs).
Two separate, identical
The left pack controls the _____.
Cockpit
The right pack controls _____.
Everything else
An aircraft may be dispatched with ______ air conditioning pack inoperative with _____.
1, altitude limitations
An aircraft may be dispatched with both air conditioning packs _____ at or below 10,000’ MSL
unpressurized/inoperative
The _____ valve controls the temperature coming into the cabin
Air mix
How is pressure regulated?
Two outflow valves
What happens when the CPD > 8.6 psi (lbs/sq. in.)
The outflow valves open automatically
Two _____ safety valves open automatically when/if CPD = 9.6 psi
Positive pressure
Electricity is provided by _____
Three engine-driven generators
Transformer rectifier converts _____ AC to _____ DC
115v AC to 28v DC
Stepdown transformer converts _____ AC to _____AC
115v AC to 28v AC
_____ power is required for safe flight
Essential
How many vent-surge tanks are there and where are they located?
2, located in wing tips
What are vent-surge tanks used for?
Prevention of internal damage due to fuel expansion or over-fueling
What is the purpose of crossfeeding?
To correct balance problems, and reroute fuel
What is the dump rate?
2400lbs/min (2500 including burnoff)
How many hydraulics and flight control systems are there?
3
System A has two _____ pumps
Engine-driven
System B has two _____ pumps
Electric
System A controls _____
Lower rudder, ground spoilers, leading edge flats, trailing edge flats, ailerons
System B controls _____
Brakes, Inboard flight spoilers, Upper rudders, air stairs, elevators
The standby system has _____ electric pump
one
What are the primary flight controls
Rudders, ailerons, and elevators
What are the sections of the compressor called?
N1 and N2
How many stages does the compressor have?
N1 has 6 stages
N2 has 7 stages
How many burner cans are in the combustion section?
9
Which turbine wheel drives N2?
First
Which turbine wheel(s) drive N1?
The last three
The exhaust from the powerplant produces _____
Thrust
What are 6 emergency items that can be found?
- Mega phones
- Crash axe
- First aid kit
- Smoke goggles
- Gloves
- Life vests
How many emergency doors and exit windows are there?
5 emergency exit doors
6 emergency exit windows
What areas does the thermal bleed heat up?
Edge of wings, engine inlets, and top VHF antenna
The B727 can de-ice but is designed to _____.
Prevent ice
True or False:
Wind components and runway contamination have no effect on Climb and Structural limits
True
Anti-ice ON has an effect on _____ limits
Climb
BOW + PAYLOAD (PL) = _____
ZERO FUEL WEIGHT (ZFW)
How do you calculate LANDING WEIGHT AT ALTERNATE (LWA)?
ZFW + Reserve + Contingency + Holding + Extra fuel
LANDING WEIGHT AT DESINATION (LWD) is
LWA + Alternate fuel
LWD + _____ = TOGW
Burnoff
What is the benefit of long range cruise (LRC)?
Saves fuel
How do you calculate fuel flow for LRC?
FF = 8300/60 x Time
Characteristics of maximum speed cruise (MSC)?
Saves time, M .90, usually FL180 - FL250
Characteristics of LRC?
Saves fuel, M.78 , Flown at higher altitudes
What is NSC (normal speed)?
Constant and Indicated Mach Cruise
M .79 - M .89
Define ‘optimum altitude’
The altitude that yields the highest specific range
What is the 1.5G Buffet Line used for?
To find altitude that is safe when moderate or greater turbulence is forcest along route
What effect does temperature have on the optimum altitude?
Higher/warmer temperatures reduce the optimum altitude
How does trip distance effect optimum altitude?
Optimum altitude may not be practical on shorter flights of ~300nm because of the time it takes to climb and decend
Define ‘Accelerate-Stop Distance Available’
Runway + stopway length available and suitable
What is V1?
Takeoff decision speed. Speed below which takeoff must be aborted
When is anti-ice on?
- OAT ≤ 8℃
AND - Spread ≤ 3℃ OR visible moisture is present
For performance takeoff adjustments, wet penalties begin at _____ inch and dry penalties begin at _____ inches
Wet penalties begin at 1/4 inch and dry penalties begin at 2 inches
What is the takeoff penalty for slippery/wet runways?
1,500 lbs
When is takeoff with anti-skid inoperative prohibited?
- On runways with standing water, slush, or wet/dry snow of sufficient depth to require an adjustment.
- With a tailwind
What are some factors that effect takeoff runway limits?
Runway length, wind component, temperature, flaps
What does the climb limit reflect?
Climb performace and engine out criteria
What factors may impact the climb limit?
Temperature, elevation, sea level pressure
What is the structural limit of the B727?
172,700 lbs unless reduced by CDL or if pressure altitude > 5,500-
The Maximum Operational Landing Weight is the lowest of which limits?
Field limit, approach and landing climb limit, structural limit
What is the field limit?
Max landing weight limited by the length of the runway and elevation. Based on stopping within 60% of ERL
What is the typical range for C.G?
20-25%
What is the typical range for Stab Trim?
5’s and 6’s
How much extra fuel is needed when you have a fuel pump inoperative in Tank 1 or 3?
12,900 lbs
(5300 in affected tank, 4300 in opposite wing tank, 3300 in tank 2
How much extra fuel is needed when you have one AFT boost pump inoperative in Tank 2?
12,000 lbs
Must also reduce ZFW by 12,000. New max ZFW = 124,000. New max payload = 19, 500
How much extra fuel is needed when you have one FORWARD boost pump inoperative in Tank 2?
If ZFW ≤ 133,700, just add 2,300
If ZFW ≥ 133,700 find tolerance, that is the amount you use to calculate amount for balance.
What does the code ‘S’ mean on the ATC flight plan?
Standard equipment
* ILS capability
* VHF communication
* VOR
What kind of transponder is the B727 equipped with?
Mode S
What does ‘EB1’ mean on the ATC flight plan?
- 1090 extended squitter
- 1090 ADS-B Out
Where can you find more information on the codes in the ATC flight plan?
ATC section of the AIM
When do IFR flight plans need to be filed?
At least 30 min prior to departure
Define ‘positive slope’ (driftdown method)
Aircraft is climbing faster than the terrain is rising or terrain is sloping away at a faster rate than our descent rate.
For one-engine inoprative driftdown performance, the aircraft needs to clear all obstacles within _____ by _____ with a POSITIVE slope (Method 1)
Obstacles within 5sm by 1,000’
For two-engine out driftdown performance the aircraft must use Method 2 or remain _____.
Within 90 minutes of an adequate airport
For one-engine inoperative driftdown performance, the aircraft needs to clear all obstacles to a driftdown alternate by _____ with a positive slope (Method 2)
2000’