Solutions no parking on drain, one hears! has 4 entries with similar clues

• 5-letter words
• wailslaments for a principality, one hears
• 7-letter words
• cannonsmen of the church, one hears, are big boomers
• 8-letter words
• explainsshows the significance of obsolete aircraft, one hears
• 12-letter words
• landingplacejetty, maybe, for bringing fish to shore, one hears