From c7fe4faf1aab7bd121763380c10be86d95a80333 Mon Sep 17 00:00:00 2001 From: Matthias Nott <mnott@mnsoft.org> Date: Sun, 22 Mar 2026 17:21:58 +0100 Subject: [PATCH] fix: Q71 answer correction, Q39 wording, remove bogus Oswald terms --- SPL Exam Questions EN/30 - Flight Performance and Planning.md | 34 +++++++++++----------------------- 1 files changed, 11 insertions(+), 23 deletions(-) diff --git a/SPL Exam Questions EN/30 - Flight Performance and Planning.md b/SPL Exam Questions EN/30 - Flight Performance and Planning.md index 51d4064..2a0aee8 100644 --- a/SPL Exam Questions EN/30 - Flight Performance and Planning.md +++ b/SPL Exam Questions EN/30 - Flight Performance and Planning.md @@ -46,9 +46,7 @@ #### Key Terms -- **D** — Drag D — Drag - ### Q3: An aircraft has to be loaded and operated in such a way that the center of gravity (CG) stays within the approved limits during all phases of flight. This is done to ensure ^t30q3 [DE](../SPL%20Exam%20Questions%20DE/30%20-%20Flugleistung%20und%20Flugplanung.md#^t30q3) · [FR](../SPL%20Exam%20Questions%20FR/30%20-%20Performances%20et%20planification%20du%20vol.md#^t30q3) @@ -247,9 +245,7 @@ #### Key Terms -- **D** — Drag D — Drag - ### Q12: The balance arm is the horizontal distance between ^t30q12 [DE](../SPL%20Exam%20Questions%20DE/30%20-%20Flugleistung%20und%20Flugplanung.md#^t30q12) · [FR](../SPL%20Exam%20Questions%20FR/30%20-%20Performances%20et%20planification%20du%20vol.md#^t30q12) @@ -487,8 +483,8 @@ #### Key Terms -- **AGL** = Above Ground Level - **FL** = Flight Level +- **AGL** = Above Ground Level - **ICAO** = International Civil Aviation Organization - **MSL** = Mean Sea Level - **NOTAM** = Notice to Air Missions @@ -987,8 +983,8 @@ #### Key Terms - **AMSL** = Above Mean Sea Level -- **ATC** = Air Traffic Control - **FL** = Flight Level +- **ATC** = Air Traffic Control - **TMA** = Terminal Manoeuvring Area ### Q43: In which airspace class are you flying at 1400 m AMSL (QNH 1013 hPa) over Birrfeld aerodrome (47°25'36"N/007°14'02"E), and what are the visibility and cloud distance minima in that airspace? ^t30q43 @@ -1080,8 +1076,8 @@ #### Key Terms -- **ATC** = Air Traffic Control - **FL** = Flight Level +- **ATC** = Air Traffic Control - **ICAO** = International Civil Aviation Organization ### Q46: Until what time is La Côte aerodrome (LSGP) open in the evening? ^t30q46 @@ -1234,8 +1230,8 @@ #### Key Terms - **IAS** = Indicated Airspeed -- **ISA** = International Standard Atmosphere - **TAS** = True Airspeed +- **ISA** = International Standard Atmosphere ### Q50: You are flying in wave lift at 6000 m altitude. Which is the maximum speed you may fly? ^t30q50 [DE](../SPL%20Exam%20Questions%20DE/30%20-%20Flugleistung%20und%20Flugplanung.md#^t30q50) · [FR](../SPL%20Exam%20Questions%20FR/30%20-%20Performances%20et%20planification%20du%20vol.md#^t30q50) @@ -1447,9 +1443,7 @@ #### Key Terms -- **D** — Drag D — Drag - ### Q59: A VFR flight will follow the route shown on the map below (dotted line) from APPENZELL towards MUOTATHAL. The route is planned for 19 March 2013 (winter time) between 1205 and 1255 LT. Answer using the DABS below. Which of these answers is correct? ^t30q59 [DE](../SPL%20Exam%20Questions%20DE/30%20-%20Flugleistung%20und%20Flugplanung.md#^t30q59) · [FR](../SPL%20Exam%20Questions%20FR/30%20-%20Performances%20et%20planification%20du%20vol.md#^t30q59) @@ -1638,8 +1632,8 @@ #### Key Terms -- **IAS** = Indicated Airspeed - **TAS** = True Airspeed +- **IAS** = Indicated Airspeed ### Q67: What has to be particularly observed when landing in heavy rain? ^t30q67 [DE](../SPL%20Exam%20Questions%20DE/30%20-%20Flugleistung%20und%20Flugplanung.md#^t30q67) · [FR](../SPL%20Exam%20Questions%20FR/30%20-%20Performances%20et%20planification%20du%20vol.md#^t30q67) @@ -1710,11 +1704,11 @@ #### Key Terms -- **AGL** = Above Ground Level - **AMSL** = Above Mean Sea Level +- **AGL** = Above Ground Level - **FL** = Flight Level -- **MSL** = Mean Sea Level - **QNH** = Pressure adjusted to mean sea level +- **MSL** = Mean Sea Level - **TMA** = Terminal Manoeuvring Area ### Q70: Which of these statements is correct? ^t30q70 @@ -1739,9 +1733,7 @@ #### Key Terms -- **D** — Drag D — Drag - ### Q71: What is the effect of a waterlogged grass runway on landing? ^t30q71 [DE](../SPL%20Exam%20Questions%20DE/30%20-%20Flugleistung%20und%20Flugplanung.md#^t30q71) · [FR](../SPL%20Exam%20Questions%20FR/30%20-%20Performances%20et%20planification%20du%20vol.md#^t30q71) @@ -1753,13 +1745,13 @@ #### Answer -A) +B) #### Explanation -The correct answer is A because a waterlogged grass surface creates greater friction and drag on the landing gear during the ground roll, causing the glider to decelerate faster and stop in a shorter distance. The water acts as a braking medium. +The correct answer is B because a waterlogged grass surface reduces wheel braking effectiveness (similar to aquaplaning) during the ground roll, causing the glider to take longer to stop. While the soft ground adds some drag, the loss of braking friction dominates, resulting in a longer landing distance. This is consistent with the general rule that wet grass increases both takeoff and landing distances. -- **B** is wrong because wet grass increases, not decreases, rolling resistance for a glider. +- **A** is wrong because shorter landing is the opposite of what happens on waterlogged grass. - **C** is wrong because while directional control may be slightly affected, the primary effect is shortened stopping distance. - **D** is wrong because surface conditions always affect landing distance. @@ -1878,8 +1870,8 @@ #### Key Terms - **AMSL** = Above Mean Sea Level -- **IAS** = Indicated Airspeed - **TAS** = True Airspeed +- **IAS** = Indicated Airspeed ### Q77: At what speed must you fly to achieve the best glide ratio for a flying mass of 450 kg? (See attached sheet.) ^t30q77 [DE](../SPL%20Exam%20Questions%20DE/30%20-%20Flugleistung%20und%20Flugplanung.md#^t30q77) · [FR](../SPL%20Exam%20Questions%20FR/30%20-%20Performances%20et%20planification%20du%20vol.md#^t30q77) @@ -2217,9 +2209,7 @@ #### Key Terms -- **n** — Load Factor (ratio of lift to weight: n = L/W) n — Load Factor (ratio of lift to weight: n = L/W) - ### Q91: The upper limit of LO R 16 equals ^t30q91 [DE](../SPL%20Exam%20Questions%20DE/30%20-%20Flugleistung%20und%20Flugplanung.md#^t30q91) · [FR](../SPL%20Exam%20Questions%20FR/30%20-%20Performances%20et%20planification%20du%20vol.md#^t30q91) @@ -2417,9 +2407,7 @@ #### Key Terms -- **D** — Drag D — Drag - ### Q99: The term balance arm in the context of a mass and balance calculation defines the ^t30q99 [DE](../SPL%20Exam%20Questions%20DE/30%20-%20Flugleistung%20und%20Flugplanung.md#^t30q99) · [FR](../SPL%20Exam%20Questions%20FR/30%20-%20Performances%20et%20planification%20du%20vol.md#^t30q99) -- Gitblit v1.3.1