#Oral Flashcards
(134 cards)
What are some differences between the 767 and the 787?
Many
A few examples:
1.Electrical (number of generators, distribution, cooling)
2. Hydraulics (high pressure,fewer items)
3. Air System (A/C using CAC, electrically driven, not using bleed air)
4. Flight Controls (Fly by wire),
5. HUD
6. Number of doors
7. Synoptic pages
Are any limitations different than the 767?
Yes. 1. Occupant limit (367 or 415 for -9)) 2. weight and CG (503,500/502,500/380,000,355,000) 3. Vmo/Mmo 4. Flap speed limit (250/230/215/210/180/170, more flap seeings on the -9 (10,17,18) 5. Max duration of takeoff thrust for single engine is ten minutes 6. Use of engine anti ice (Auto anti ice, turn on during ground ops) 7. Engine EGT & Oil limits 8. Crosswind for takeoff and landing (35TO/33LG, -9 29TO/35LG) 9. Overhead rest facilities added 10. Autoland (can land with one or two engines)
Cold weather Operations.
What do you do when OAT is -7C?
When visible moisture is present and OAT is between 3C and -7C:
If ground operations do not exceed 60 minutes,
1. Either 20TPR(42% N1) or higher engine run up for 30 seconds
or
2. Engine inspection by maintenance personnel.
Info 34C
Cold weather Operations.
When you exceed 60 minutes of ground time during 3C to -7C, what should you do?
GTB and maintenance inspection
Info 34C
Cold weather Operations.
What should the arriving crew do during Icing conditions?
Request maintenance to perform inspection after block in and record it into the Journey & Radio log
Info 34C
Are there any threats on the TCP panel?
Yes. According to Info 125B, it is reported that the frequency set on the TCP changes accidentally and received audio on the ACP will be lost. Monitor frequency and ACP receiver lights.
Electrical
What are the electrical differences from the 767?
*4 Variable Frequency engine starter/generators
*2 Variable Frequency APU starter/generators
*Large Motor controller, The airplane’s use of variable frequency power requires large
Motor Loads to be energized by motor controllers, which conditions that power for use.
*Electric Brake system, 4 electric brake power supply units regulate power for the Exclusive use of the airplane electric brake system.
*3 x External power Receptacles (2 FWD - 1 AFT)
*Electric Wing A/I protection
*Flight controls (fly by wire) Stabilizer, Spoilers
Electrical
What are the electrical power sources?
Electrical power sources are:
*Four variable Frequency engine starter/generators
*Two variable Frequency APU starter/generators
*Three external AC power receptacles
*One Ram Air Turbine (RAT)
*One main battery
*One APU battery
*Three flight control Permanent Magnet Generators
*Two EEC Permanent Magnet Alternators
AOM 6.20.1
Electrical #S
Name some items are that on Primary 115VAC, Primary 28VDC, and Primary 235?
Primary 115 Vac Loads: Cabin Exterior lighting Cabin Systems & IFE Galley Power GPWS, WXR Transponder, TCAS Window HEAT HF-SATCOM
Primary 28 Vdc Loads: Ground Operations Common Core System Audio & VHF Com Auto Pilot / Auto Throttle Engine Igniters DC Fuel Pump Brake Power Secondary FCTL Power Backup FCTL power Standby power
Primary 235 Loads: Wing ice protection ECS Recirc fans Main Tank fuel Pumps Cargo Heaters Spoilers Stabilizer Alternate Flaps Equipment cooling Galley Refrigeration Aft Galley complex
Flight control
What are the unique fail situations for loss of all hydraulic power?
What if there is a complete loss of flight control signaling?
In the unlikely event of the loss of all hydraulic power
- The electrically actuated stabilizer and the two spoiler pairs allow pilot control of pitch and roll using the Primary pitch trim switches, alternate pitch trim switches, and the control wheel.
-If there is a complete loss of flight control signaling, direct wiring from the flight deck to the stabilizer and a spoiler pair allow pilot control of pitch using alternate pitch trim switches and roll using the control wheel.
AOM 9.20.2
Hydraulics/Flight controls
If you forget to set the hydraulic panel prior to the weight and balance, When will you notice?
??
Engines/APU
What are some engine differences on the 787 from the 767? What are the characteristics?
RR Trent rated at 69,800 Pounds of take off thrust. The engines are three-rotor axial flow Turbofans of high compression and bypass ratio. TPR, N1 and EGT are the primary engine Indication.
(AOM 7.20.1)
Engines
What is TAP? How does it operate?
TAP is an automatic feature that provides protection against Asymmetric thrust during takeoff or go-around by limiting thrust on the higher thrust engine. TAP enhances safety by:
- Allowing a decrease in approach speed at light gross weights,
- Providing engine-out control capability for speeds above stick shaker
- Allowing full rated thrust to be available for all-engine operation at weights and airspeeds.
Fire protection
What is the fire protection system that is different between in FLT and on GND?
Cargo Compartment Fire Extinguishing.
*In flight:
A fire warning from the cargo fire detection system causes the immediate total Discharge of two extinguisher bottles into the affected compartment. After 15 min. Time Delay, the remaining three extinguisher bottles discharge at a reduced flow rate into the Compartment.
VS
*On the ground, if a Cargo Fire Discharge switch is pushed, three extinguisher bottles discharge simultaneously into the selected compartment, with the third bottle Discharging at a reduced flow rate.
Stall protection
Stall protection reduces the likelihood of inadvertently exceeding the stall angle of attack by providing enhanced crew awareness of the approach to stall or to a stalled condition. Stall protection limits the speed to which the airplane can be trimmed . The trim reference Speed is limited by inhibiting trim in the nose up direction when the airplane slows to a Speed where maneuver margin is limited.This trim inhibit speed is approximately the Minimum maneuvering speed (top of the amber band) at lower altitudes and can be 10 to 20 knots lower than the top of the amber band at higher altitudes.
(AOM 9.20.12)
Auto flight
In which mode does A/T not wake up?
Thrust levers can be manually positioned without disconnecting the auto throttle. After
Manual positioning, the auto throttle system repositions thrust levers to comply with the Active mode. The auto throttle system does not reposition thrust levers while in HOLD Mode. When the pitch flight mode annunciation is FLCH SPD, the auto throttle can enter The HOLD mode. This occurs if the pilot overrides thrust levers; or, in a descent, when Thrust levers retard to IDLE. When in HOLD mode, thrust lever servos are inhibited And the autothrottle does not control thrust or speed. Thrust levers can be manually Advanced.
(AOM 4.20.13)
FLT instruments
(ALT,SPD,ATT,HDG,POSITION)
What is each data source?
Initial Reference System (IRS):
The IRS is the primary source for attitude and inertial navigation position information.
The major components of the IRS are:
Two Inertial reference units (IRU) The IRU is the primary source for independent
Inertial navigation position information.
*Two attitude heading reference units (AHRU) The AHRU are the primary source
For attitude and heading information.
Air Data Reference system (ADRS) The ADRS provides primary, secondary and standby air Data information for ALT and SPD information. The major components of the ADRS are: *Six air data modules *Six static ports *Three pitot probes *Two angle of attack sensors *One total air temperature probe (AOM 10.20.17 - 11.20.8)
Navigation
What is Nav. Air Data System?
ADRS and IRS (AHRU) provides Altitude, Airspeed, Attitude, Heading, Position information
ADRS also provides Altitude and Airspeed to ISFD.
(AOM 11.20.8)
What is The difference between AIRSPEED UNRELIABLE and NAV AIRSPEED DATA?
PFD Airspeed by AOA. Altitude by GPS.
If using GPS altitude , the altimeter cannot be used to accurately maintain ATC
assigned altitudes.
Primary flight controls enter secondary mode
AFDS INOP
Auto pilot INOP
Auto Throttles INOP
Performance
What are Cautions when flying around MAX ALT?
At MAX ALT 1.3 buffet margin line is a conventional machine, it is common
To be near thrust limit Altitude. Warmer Temperature deviation from ISA could
Make the buffet margin less than 1.3 Aft Cruise CG would be favorable, avoid
Large Bank angles and turbulence.
Performance
What are measures to improve Take Off performance
A new method of Take Off introduced in B787
* Optimum V1 * Improved Climb * Alternate Forward C.G.
Optimum V1 is a method of using unbalanced V1 as necessary when long RWY is
Available. There are cases where it is more effective to lift off at a short distance
By making V1 larger than balanced V1, such as when there is an obstacle in
The immediate vicinity of the RWY.
Improved climb is a technique to increase the Take Off weight by increasing
The Take Off speed when the RWY is long enough.
Alternate Forward C.G. Is a technique for improving Take Off performance on Short Runways By setting the Forward limit of G.G. Backward. Take Off performance is calculated based on the most disadvantaged position among Certified CG limit regardless of actual Take Off CG position. For example, stall speed and Vmu are set at the forward limit, Vmcg and Vmca are set at the backward limit. However, by Limiting the forward limit from a forward CG limit to alternate forward CG limit, it is possible To improve Take Off performance on short Runways.
Performance
What is optimum V1?
Optimum V1 is a method of using unbalanced V1 as necessary when long RWY is
Available. There are cases where it is more effective to lift off at a short distance
By making V1 larger than balanced V1, such as when there is an obstacle in
The immediate vicinity of the RWY.
Performance
What is Improved climb?
Improved climb is a technique to increase the Take Off weight by increasing
The Take Off speed when the RWY is long enough.
Performance
What is alternate forward CG technique?
Alternate Forward C.G. Is a technique for improving Take Off performance on Short Runways By setting the Forward limit of C.G. Backward. Take Off performance is calculated based on the most disadvantaged position among Certified CG limit regardless of actual Take Off CG position. For example, stall speed and Vmu are set at the forward limit, Vmcg and Vmca are set at the backward limit. However, by Limiting the forward limit from a forward CG limit to alternate forward CG limit, it is possible To improve Take Off performance on short Runways.
