diff --git a/libs/content/question-bank-type/content/B737/B737.14/page.md b/libs/content/question-bank-type/content/B737/B737.14/page.md index e931abfad..2459281a9 100644 --- a/libs/content/question-bank-type/content/B737/B737.14/page.md +++ b/libs/content/question-bank-type/content/B737/B737.14/page.md @@ -8,3 +8,44 @@ title: "Landing Gear" **Note**: This is just a summary of the FCOM content that regularly shows up in Type Rating exams. For an overview of the systems in this chapter, check the FCOM + +## GEAR WARNING LIGHT + +Illuminates red when: + +- Gear is in transit +- Gear lever position disagrees with landing gear position +- Gear is not down and locked below 800ft RA with either thrust lever in idle + +## LANDING GEAR TRANSFER UNIT + +The landing gear retraction normally uses hydraulic system A. The landing gear +transfer unit uses hydraulic system B to aid in retraction in certain +conditions: + +- Aircraft is airborne +- Engine NĀ°1 RPM is below a limiting value (engine 1 failed) +- Landing gear lever is selected up +- Either main landing gear is not up and locked + +## BRAKES / AUTOBRAKES + +Normal brakes use hydraulic system B for operation. If system B is not +available, alternate brakes use system A. If hydraulic system A & B are lost, +then the brake accumulator can supply limited pressure for brake operation. + +Autobrake provides automatic maximum braking in the event of an RTO or +preselected braking during landing. Autobrake is only available with normal +brakes. The antiskid system is available with normal and alternate brakes. +Autobrake RTO will engage only above 90kt wheel speed. + +## ANTI SKID SYSTEM + +The anti-skid system prevents locked wheels by comparing the wheel speed of the +two inboard main wheels and the two outboard main wheels. When a locked +condition is sensed, brake pressure to the slower wheel is released. The +anti-locking system is available only above 25 kt. + +The anti-skid system releases brake pressure to a wheel sensed in a skid +situation. Protection against hydroplaning is available for wheels 1 & 3; it is +detected when the wheel speed is 50kt below GS. diff --git a/libs/content/question-bank-type/content/B737/B737.14/questions.yaml b/libs/content/question-bank-type/content/B737/B737.14/questions.yaml index 6b14f00c6..ededfce2f 100644 --- a/libs/content/question-bank-type/content/B737/B737.14/questions.yaml +++ b/libs/content/question-bank-type/content/B737/B737.14/questions.yaml @@ -4,12 +4,20 @@ annexes: [] learningObjectives: - B737.14 - explanation: "" + explanation: | + > With RTO selected, if the takeoff is rejected prior to wheel speed reaching 88 + > knots autobraking is not initiated, the AUTO BRAKE DISARM light does not + > illuminate and the RTO autobrake function remains armed. If the takeoff is + > rejected after reaching a wheel speed of 88 knots, maximum braking is applied + > automatically when the forward thrust levers are retarded to IDLE. + + **NOTE**: Older sources will state 90kts. This has been corrected by boeing + to 88kts. variant: type: true-or-false question: With RTO selected, the system will automatically apply maximum brake pressure when the thrust levers have been retarded to idle with speed at - or above 90 kts. + or above 88 kts. answer: true - id: QVJKJIXL relatedQuestions: [] @@ -17,10 +25,18 @@ annexes: [] learningObjectives: - B737.14 - explanation: "" + explanation: | + > ### Antiskid Protection + > + > Antiskid protection is provided in the normal and alternate brake systems. + > The normal brake hydraulic system provides each main gear wheel with + > individual antiskid protection. When the system detects a skid, the associated + > antiskid valve reduces brake pressure until skidding stops. **The alternate brake + > hydraulic system works similar to the normal system however antiskid protection + > is applied to main gear wheel pairs instead of individual wheels**. variant: type: simple - question: Which of the following statements are false for Antiskid Protection. + question: Which of the following statements is false for Antiskid Protection. options: - id: l6qp1 text: All of the above are false. @@ -47,10 +63,16 @@ annexes: [] learningObjectives: - B737.14 - explanation: "" + explanation: | + > ### Nose Wheel Steering + > + > Nose wheel steering is available when the nose gear is in the down position and + > compressed by weight of the airplane. (...) Alternate nose wheel steering can + > be activated to provide system B pressure to the nose wheels when the NOSE + > WHEEL STEERING switch is placed to ALT variant: type: simple - question: Which of the following statements are true for the Nose Wheel Steering + question: Which of the following statements is true for the Nose Wheel Steering system options: - id: mgdwv @@ -85,7 +107,13 @@ annexes: [] learningObjectives: - B737.14 - explanation: "" + explanation: | + > ### Brake Accumulator + > + > The brake accumulator is pressurized by hydraulic system B. If both normal and + > alternate brake system pressure is lost, trapped hydraulic pressure in the brake + > accumulator can still provide several braking applications or parking brake + > application. variant: type: true-or-false question: If both normal and alternative brake system pressure is lost it is @@ -98,7 +126,21 @@ annexes: [] learningObjectives: - B737.14 - explanation: "" + explanation: | + ### Normal landing gear extension is possible if Hydraulic system A operational. + + > Hydraulic power for retraction, extension, and nose wheel steering is normally + > supplied by hydraulic system A. + + ### The landing gear cannot be retracted.** + + šŸ™ƒ + + ### The landing gear can be manually lowered with the landing gear lever in ANY position. + + > With the manual extension access door open: + > - manual landing gear extension is possible with the LANDING GEAR + > lever in any position variant: type: simple question: Which of the following statements is true, when the landing gear @@ -114,12 +156,12 @@ correct: false why: "" - id: n31g5 - text: The landing gear can be manually lowered with the lnding gear lever in ANY - position. + text: The landing gear can be manually lowered with the landing gear lever in + ANY position. correct: false why: "" - id: t45rw - text: All of the above are true + text: All of the options are true correct: true why: "" - id: QLLLRAKQ @@ -128,7 +170,13 @@ annexes: [] learningObjectives: - B737.14 - explanation: "" + explanation: | + > ### Parking Brake + > + > The parking brake can be set with either A or B hydraulic systems pressurized. If + > A and B hydraulic systems are not pressurized, parking brake pressure is + > maintained by the brake accumulator. Accumulator pressure is shown on the HYD + > BRAKE PRESS indicator. variant: type: simple question: Which hydraulic system operates the parking brake? @@ -146,7 +194,7 @@ correct: false why: "" - id: 0zhxz - text: All of the above. + text: All options are correct correct: true why: "" - id: QPSGIJCR @@ -155,7 +203,12 @@ annexes: [] learningObjectives: - B737.14 - explanation: "" + explanation: | + > ### Landing Gear Indicator Lights (overhead) + > + > Note: Landing gear is down and locked as long as one green landing gear + > indicator light (center panel or overhead panel) for each gear is + > illuminated. variant: type: true-or-false question: The landing gear lights on the main centre panel all indicate green, @@ -169,7 +222,17 @@ annexes: [] learningObjectives: - B737.14 - explanation: "" + explanation: | + > ### AUTO BRAKE DISARM Light + > Illuminated (amber) ā€“ + > - SPEED BRAKE lever moved to down detent during RTO or landing + > - manual brakes applied during RTO or landing + > - thrust lever(s) advanced during RTO or landing + > - except during first 3 seconds after touchdown for landing + > - landing made with RTO selected + > - **RTO mode selected on ground** + > - **illuminates for one to two seconds then extinguishes** + > - a malfunction exists in automatic braking system. variant: type: simple question: You select the AUTO BRAKE to RTO on the ground, and the AUTO BRAKE @@ -200,27 +263,16 @@ annexes: [] learningObjectives: - B737.14 - explanation: |+ + explanation: | > **Autobrake ā€“ Disarm** - > - > The pilots may disarm the autobrake system by moving the selector switch to the - > OFF position. This action does not cause the AUTO BRAKE DISARM light to - > illuminate. After braking has started, any of the following pilot actions disarm the - > system immediately and illuminate the AUTO BRAKE DISARM light: - - > ā€¢ moving the SPEED BRAKE lever to the down detent - - > ā€¢ advancing the forward thrust lever(s), except during the first 3 seconds after touchdown for landing - - > ā€¢ applying manual brakes. - - --- - + > - moving the SPEED BRAKE lever to the down detent + > - advancing the forward thrust lever(s), except during the first 3 seconds after touchdown for landing + > - applying manual brakes. variant: type: simple question: Other than moving the Autobrake selector to OFF, how else can @@ -251,7 +303,11 @@ annexes: [] learningObjectives: - B737.14 - explanation: "" + explanation: | + > ### Manual Gear Extension Handles + > + > Right main, nose, left main ā€“ Each landing gear uplock is released when related + > handle is pulled to its limit, approximately 24 inches (61 cm). variant: type: simple question: How far must you pull the emergency gear release handle before the