Five  PPKs were carried on Apollo 11: three (one for each astronaut) were stowed on Columbia before launch, and two on Eagle.
fˈaɪv pˌiːpˌiːkˈeɪz wɜː kˈæɹid ˌɔn ɐpˈɑːloʊ ɪlˈɛvən: θɹˈiː wˈʌn fɔːɹ ˈiːtʃ ˈæstɹənˌɔːt wɜː stˈoʊd ˌɔn kəlˈʌmbiə bᵻfˌoːɹ lˈɑːntʃ, ænd tˈuː ˌɔn ˈiːɡəl.