diff --git a/megamek/src/megamek/client/ui/swing/boardview/EntitySprite.java b/megamek/src/megamek/client/ui/swing/boardview/EntitySprite.java
index 15efe956f2c..54fb4876cff 100644
--- a/megamek/src/megamek/client/ui/swing/boardview/EntitySprite.java
+++ b/megamek/src/megamek/client/ui/swing/boardview/EntitySprite.java
@@ -621,7 +621,7 @@ public void prepare() {
                     stStr.add(new Status(GUIP.getCautionColor(), "ROLLED"));
                 }
 
-                if ((a.getCurrentFuel() <= 0) && entity.hasEngine() && !entity.getEngine().isSolar()) {
+                if ((a.getCurrentFuel() <= 0) && a.requiresFuel()) {
                     stStr.add(new Status(GUIP.getWarningColor(), "FUEL"));
                 }
 
diff --git a/megamek/src/megamek/common/ConvFighter.java b/megamek/src/megamek/common/ConvFighter.java
index 3a570d8a91d..a316d65c71b 100644
--- a/megamek/src/megamek/common/ConvFighter.java
+++ b/megamek/src/megamek/common/ConvFighter.java
@@ -66,7 +66,7 @@ public double getFuelPointsPerTon() {
 
     @Override
     public int getFuelUsed(int thrust) {
-        if (!hasEngine() || getEngine().isSolar()) {
+        if (!hasEngine() || !requiresFuel()) {
             return 0;
         }
         int overThrust = Math.max(thrust - getWalkMP(), 0);
diff --git a/megamek/src/megamek/common/FixedWingSupport.java b/megamek/src/megamek/common/FixedWingSupport.java
index 764d4ce9a09..21968f7a362 100644
--- a/megamek/src/megamek/common/FixedWingSupport.java
+++ b/megamek/src/megamek/common/FixedWingSupport.java
@@ -161,9 +161,9 @@ public double getFuelPointsPerTon() {
 
     @Override
     public boolean requiresFuel() {
-        return !(((hasPropChassisMod() || getMovementMode().isAirship()))
-                && hasEngine() && (getEngine().isFusion() || (getEngine().getEngineType() == Engine.FISSION)
-                || (getEngine().getEngineType() == Engine.SOLAR)));
+        return !((hasPropChassisMod() || getMovementMode().isAirship())
+                && hasEngine()
+                && (getEngine().isFusion() || getEngine().isFission() || getEngine().isSolar()));
     }
 
     private static final TechAdvancement TA_FIXED_WING_SUPPORT = new TechAdvancement(TECH_BASE_ALL)
diff --git a/megamek/src/megamek/common/IAero.java b/megamek/src/megamek/common/IAero.java
index 6c902f85af4..69867e91019 100644
--- a/megamek/src/megamek/common/IAero.java
+++ b/megamek/src/megamek/common/IAero.java
@@ -146,6 +146,13 @@ default int getClusterMods() {
 
     double getFuelPointsPerTon();
 
+    /**
+     * @return True when this aero requires fuel to move. Note that the result is undefined when
+     * the unit has no engine. Callers should consider this case themselves. Also note that
+     * this method does not check whether fuel use as a game option is active, only if the unit
+     * technically requires fuel to move. For example, returns false for solar powered prop-driven
+     * fixed wing support (TM p129).
+     */
     default boolean requiresFuel() {
         return true;
     }
@@ -776,7 +783,7 @@ default void land() {
 
     default int getFuelUsed(int thrust) {
         Entity entity = (Entity) this;
-        if (entity.hasEngine() && entity.getEngine().isSolar()) {
+        if (!entity.hasEngine() || !requiresFuel()) {
             return 0;
         } else {
             int overThrust = Math.max(thrust - entity.getWalkMP(), 0);
diff --git a/megamek/src/megamek/common/MoveStep.java b/megamek/src/megamek/common/MoveStep.java
index 04737c1e1e3..71881773e38 100644
--- a/megamek/src/megamek/common/MoveStep.java
+++ b/megamek/src/megamek/common/MoveStep.java
@@ -1921,7 +1921,7 @@ private void compileIllegal(final Game game, final Entity entity,
 
             // check the fuel requirements
             if (game.getOptions().booleanOption(OptionsConstants.ADVAERORULES_FUEL_CONSUMPTION)
-                    && entity.hasEngine() && !entity.getEngine().isSolar()) {
+                    && entity.hasEngine() && a.requiresFuel()) {
                 int fuelUsed = mpUsed + Math.max(mpUsed - cachedEntityState.getWalkMP(), 0);
                 if (fuelUsed > a.getCurrentFuel()) {
                     return;