A Python script to download the navigation charts for all spanish airports from Aena website. It requires BeautifulSoup4 installed in your system.

aena-charts.py

import os, errno, urllib2
from bs4 import BeautifulSoup

BASE_URL = "http://www.aena.es/csee/Satellite/navegacion-aerea/es/Page/1078418725163/?other=1083158950596#ancla3"
DEFAULT_RETRIES = 3

def leaf_open_list(soup):
	if not soup:
		return None
	r1 = soup.find("li", class_="listOpened")
	r2 = leaf_open_list(r1)
	if not r2:
		return r1
	else:
		return r2

def make_dir(dir):
	try:
		os.mkdir(dir)
	except OSError as e:
		if e.errno == errno.EEXIST and os.path.isdir(dir):
			pass
		else:
			raise

def download_file(url, filename, retries=DEFAULT_RETRIES):
	try:
		web_content = urllib2.urlopen(url)
		target_file = open(filename, "wb")
		target_file.write(web_content.read())
		target_file.close()
	except Exception, e:
		print("Error while downloading %s: %s" % (url, e))
		if retries > 0:
			download_file(url, filename, retries - 1)
		else:
			raise
	finally:
		web_content.close()
		target_file.close()

def download_html(url):
	try:
		return urllib2.urlopen(url).read()
	except urllib2.HTTPError as e:
		print("Error: cannot download webpage from URL %s: %s" % (url, e))

def download(url, folder):
	make_dir(folder)
	body = download_html(url)
	if not body:
		return None
	soup = BeautifulSoup(body)
	open_list = leaf_open_list(soup.find(id="contentLists")).find("ul")
	if not open_list:
		return None

	for li in open_list.find_all("li", class_=""):
		url = "http://www.aena.es/%s" % li.find("a").get("href")
		filename = li.find("a").find("strong").get_text().replace("/", "_")
		pdf_file = "%s/%s.pdf" % (folder, filename)
		print("Downloading %s..." % pdf_file)
		download_file(url, pdf_file)

	for li in open_list.find_all("li", class_="listClosed"):
		url = "http://www.aena.es/%s" % li.find("a").get("href")
		subfolder = "%s/%s" % (folder, li.find("a").find("strong").get_text().replace("/", "_"))
		print("Entering subfolder %s" % subfolder)
		download(url, subfolder)

download(BASE_URL, "Airports")

It doesn't work...

root@vps339592:~# python aena.py
Error: cannot download webpage from URL http://www.aena.es/csee/Satellite/navegacion-aerea/es/Page/1078418725163/?other=1083158950596#ancla3: HTTP Error 404: Not Found