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resources/js/Components/FlightsGoneBy/AirlineAlphabetTable.vue

@@ -25,7 +25,7 @@ function getCode(airline: Airline): string | null {
 
 function airlineEntriesForLetter(letter: string): AirlineEntry[] {
     const flights = props.flightsByLetter[letter] ?? []
-    const seen = new Map<string, AirlineEntry>()
+    const seen = new Map<number, AirlineEntry>()  // key by airline.id
 
     for (const flight of flights) {
         const airline = flight.airline
@@ -35,15 +35,15 @@ function airlineEntriesForLetter(letter: string): AirlineEntry[] {
         if (!code?.startsWith(letter)) continue
 
         const year = new Date(flight.departure_date).getFullYear()
-        const existing = seen.get(code)
+        const existing = seen.get(airline.id)
         if (!existing || year < existing.firstYear) {
-            seen.set(code, { airline, code, firstYear: year })
+            seen.set(airline.id, { airline, code, firstYear: year })
         }
     }
 
-    return [...seen.entries()]
-        .sort(([a], [b]) => a.localeCompare(b))
-        .map(([, entry]) => entry)
+    return [...seen.values()]
+        .sort((a, b) => a.code.localeCompare(b.code))
+        .map(entry => entry)
 }
 
 function isHighlighted({ firstYear }: AirlineEntry): boolean {
@@ -89,7 +89,7 @@ defineExpose({ toBBCode })
         <template #items="{ row: letter }">
             <div
                 v-for="entry in airlineEntriesForLetter(letter)"
-                :key="entry.airline.IATA_code!"
+                :key="entry.airline.id"
             >
                 <InlineBadge style="align-items:center;gap:0.2em" :variant="isHighlighted(entry) ? 'business' : undefined">
                     <AirlineLogo :airline="entry.airline" />  {{ entry.code }}

resources/js/Pages/Profile/Achievements/fun_challenges.airport_alphabet.vue

@@ -174,6 +174,9 @@ async function copyBBCode() {
             Most letters are possible to visit somewhat organically if you fly enough, but some will be difficult. <b>Q</b> is probably the most difficult letter to obtain -
             there's no rules against having a code starting with Q, but due to many aviation terms starting with Q (such as QNH), very few airports use it.
         </p>
+        <p>
+            Based on our airport database, it is actually possible to obtain every letter except <b>V</b> without leaving China.
+        </p>
         <p>
             At time of writing, there are just 2 major airports that have daily scheduled service by major airlines, and 4 airports with any commercial service at all.
             Others - such as seaplane ports - might have GA or charter service.