Tech
  • 信息
    点击 'Save & Edit' 以启用全部功能
    导出
    学习
    编辑
    管理
公开
Save & Edit
正在搜索...
此牌组中的学习卡（21）

  • At what altitude is the mode reported as enabled?

    Below 1,000ft

    altitude

  • How long should a fast realignment be completed in?

    30 seconds

    timing

  • Which light is indicated as illuminating related to descent scheduling?

    The OFF SCHED DESCENT light

    warnings

  • Where does the fragment state a fluid leak can develop?

    In the System A reservoir

    hydraulics

  • What centre tank fuel quantity value is shown in the fragment?

    363 kgs

    fuel

  • Which system's pressure is reported as lost in the text?

    System A pressure

    systems

  • What indicates a hot air leak in the APU bleed air ducting on the forward overhead panel?

    • A leak
    apu bleed warnings

  • When will the LOW QUANTITY light illuminate in the standby hydraulic system?

    • When the standby reservoir is approx half empty
    hydraulics warnings standby

  • If the standby reservoir quantity decreases to zero, to what approximate level will the System B reservoir decrease?

    • Approximately 72%
    hydraulics systemb standby

  • What Mach value is shown in the text?

    .615

    mach

  • What does the Mach Trim System provide?

    Speed stability at airspeeds above:

    machtrim stability

  • Where is the speed magenta selected bug located?

    On the MCP

    mcp speed

  • Where is the vertical speed indicator display located as stated in the text?

    On the PFD window

    pfd vsi

  • If a pack light illuminates and does not extinguish on reset, what will the pack do?

    Continue to operate until master caution recall

    pack caution

  • What condition was sensed that could have caused the alert?

    Excessive temperature

    temperature alert

  • Which detector loop failed according to the text?

    A single detector loop for an engine

    detector engine

  • What is the position of the OVHT/DET switch in the aft electronic panel?

    NORMAL

    ovht switch

  • During CWS roll operation, above what bank angle will the wings not roll level when control wheel pressure is released?

    Above 6 degrees

    cws flight_control

  • Above what Mach number does the Mach Trim System operate?

    Above Mach \(0.615\)

    mach_trim flight_control

  • When the traffic symbol is showing descending on the Navigation Display (ND), what is shown alongside it?

    A down arrow and - 07

    tcas nd

  • What vertical rate value appears in the text for the Navigation Display?

    500 fpm

    nd vertical_rate
学习笔记

Overview

  • The input contains fragmented study items about aircraft systems: TCAS/TA, pressurization, hydraulic systems, fuel alerts, APU/bleed/pack faults, Mach trim, and flight-mode / control wheel steering (CWS) behaviour.
  • Many items are partial; where wording is ambiguous the notes label that and preserve the key, useful facts.

TCAS / Traffic Alerts (TA)

  • TA-only mode: text fragment mentions "'TA Only' mode" and altitude threshold "below 1,000 ft"; generally TA/RA logic and display behavior can be inhibited or change at low altitudes.
  • Traffic symbol with down arrow and '-07': the ND shows a traffic target with a downward arrow and "-07" — this denotes a descending intruder with a vertical speed of about -700 ft/min (display units are hundreds of fpm).

Mach Trim System

  • Function: Mach Trim provides pitch stability related to Mach-number effects at higher speeds.
  • Operating threshold: it operates above about \(M=0.615\) (written in the fragment as ".615").
  • Indication: engagement or active mode is normally annunciated on the PFD/flight mode display.

Pressurization

  • Controller limit: the pressurization controller maximum / maintained differential pressure noted is \(8.35\ \mathrm{psid}\) (mentioned with 37,000 ft).
  • Crew action: there are references to an "OFF SCHED DESCENT" light illuminating on the pressurization panel and a required crew action — original text incomplete; when this annunciates, follow the QRH/pressurization checklist.

Hydraulic Systems (standby, System A/B, PTU)

  • Standby hydraulic leak: a leak in the standby hydraulic system will cause a decrease in system B fluid indication; the fragment gives an approximate residual of \(72\%\) for the affected reservoir indicator (text fragmented).
  • LOW QUANTITY light: the LOW QUANTITY annunciator for the standby system will illuminate when the standby reservoir reaches an approximate threshold (fragment suggests "about half empty"); consult the specific aircraft QRH for the exact trigger level.
  • PTU operation: if System A loses its electric-driven pressure pump (or System A pressure is lost), the PTU (Power Transfer Unit) behaviour is affected — the fragment implies the PTU will not function if System A has no pressure source. In short: the PTU requires hydraulic pressure available in one system to assist the other; loss of System A electrical pump can disable PTU functionality.

Fuel / Centre Tank Alerts

  • Centre tank quantity alert: a "CONFIG fuel" alert and a centre tank fuel quantity threshold of \(363\ \mathrm{kg}\) is mentioned; the fragment states the centre tank displayed quantity remains less than \(363\ \mathrm{kg}\) until an unspecified condition. Typical logic: centre tank fuel alerts are tied to configuration/imbalance/arming logic and may persist until fuel is reduced/managed per checklist.
  • Practical point: if a centre tank fuel alert appears, follow the fuel system and QRH procedures (transfer, isolation, or configuration checks).

APU / Bleed Air / Pack Faults

  • APU hot-air leak: a hot-air leak in the APU bleed ducting is annunciated on the forward overhead panel (a specific leak light or annunciator is indicated in the fragment).
  • Pack faults: the fragments mention single/double pack faults and a dual pack failed light. If a pack overtemperature or overpressure is sensed, the pack may continue to operate until a reset or until conditions subside; dual-pack failures are more serious and require QRH procedures.
  • Single detector loop failure: if one detector loop fails for an engine fire/overheat detector but the OVHT/DET switch is in NORMAL, some fire indications may still be available via the remaining loop; the fragment asks what flight indications to expect — general rule: single-loop fault may create a detection fault annunciation and reduce redundancy, but does not necessarily remove all fire indications.

Flight Control / CWS / Roll Behavior

  • CWS roll and bank threshold: the fragment states that above 6 degrees of bank the wings will not roll level automatically when control wheel pressure is released during CWS roll operation. In other words, if bank exceeds ~6°, the roll-coupled auto-leveling behavior will not immediately return the wings to level without pilot input or different mode engagement.

Aborted Takeoff / Autoland / Flight Mode Notes (fragmented)

  • The text contains partial statements about aborted takeoff: "A flight is take no aborted action - shortly the auto after abort takeoff capability and programs prepares cabin to return land at the takeoff departure field airfield." This is incomplete; general guidance:
  • If an aborted takeoff occurs, follow the QRH/thrust reverser & braking procedures, and assess whether the aircraft and field conditions support returning to the departure airfield.
  • Some auto-flight or FMC functions may prepare for return/landing if specific abort/return modes are selected; always follow company/QRH procedures.

Time/Alignment

  • Fast realignment: a "fast 30 seconds realignment" is mentioned — likely referring to an inertial reference or IRS/IR quick alignment mode which can complete alignment in about 30 seconds under certain conditions. Verify with aircraft AFM/MEL whether a 30 s fast align is supported and what conditions apply.

How to use these notes / Cautions

  • Many fragments in the source are incomplete; treat the extracted numeric values (\(M=0.615\), \(8.35\ \mathrm{psid}\), \(363\ \mathrm{kg}\), \(72\%\), "-07" = -700 fpm) as the salient items to memorize, but always verify against the aircraft-specific QRH/AFM/Flight Crew Operating Manual before applying to operations.
  • For any annunciator or system fault, follow the aircraft QRH and company procedures rather than ad-hoc memory items.

Quick reference (extracted values)

  • Mach Trim operate above: \(M=0.615\)
  • Pressurization differential referenced: \(8.35\ \mathrm{psid}\)
  • Centre tank alert threshold shown: \(363\ \mathrm{kg}\)
  • Standby/system B reservoir approximate residual: \(72\%\)
  • ND traffic vertical rate display "-07" ≈ -700 ft/min
  • CWS roll auto-level threshold: about \(6^{\circ}\) bank

Items flagged as ambiguous / need verification

  • Exact meaning and triggering logic for "TA Only mode below 1,000 ft" — verify with TCAS/aircraft documentation.
  • Precise behaviour and trigger levels for LOW QUANTITY annunciator in the standby hydraulic system.
  • Complete condition that clears the centre tank CONFIG alert (text truncated).
  • Specific PTU behaviour depending on which pumps/loss scenarios occur — verify against hydraulic schematic and QRH.
  • Any pack/APU/bleed fault recovery steps — follow the AFM/QRH.

Study tips

  • Memorize the clear numeric thresholds listed in "Quick reference" and associate each with the system (Mach Trim, pressurization, fuel, hydraulic).
  • For annunciators and faults, prioritize learning the QRH flows and the immediate memory items rather than trying to memorize all possible failure permutations.
  • Use the aircraft AFM/QRH for definitive behaviour of PTU, hydraulic transfer, pack and APU bleed faults, and TCAS inhibition logic.