Chandler has a well-crafted Quiptic for us this morning which should appeal to improving solvers and perhaps attract new ones.
Abbreviations
cd cryptic definition
dd double definition
cad clue as definition
(xxxx)* anagram
anagrind = anagram indicator
[x] letter(s) removed
definitions are underlined
Across
1 Resort name is hard in European language
SPANISH
A charade of SPA, N, IS and H.
5 Bag for books put in stores at Cheltenham
SATCHEL
Hidden in storeS AT CHELtenham.
10 Mention of orchard fruit for couple
PAIR
A soundalike clue (‘mention of’) for PEAR.
11 One regularly making changes?
BELL-RINGER
A cd. The reference is to the phrase ‘ring the changes’.
12 Throw off course dishonest type with journalist when backsliding
DERAIL
A reversal of LIAR and ED.
13 This person’s to thrive after leaving society that’s not acceptable
IMPROPER
A charade of I’M and PRO[S]PER.
14 Rally those heading each new company before this period?
ENCOURAGE
A charade of ENC for the initial letters of ‘each’, ‘new’ and ‘company’ and OUR AGE.
16 Reportedly, substantial framework of bars
GRATE
A soundalike clue (‘reportedly’) for GREAT.
17 First of police in place showing deliberate nastiness
SPITE
An insertion of P for the initial letter of ‘police’ in SITE. The insertion indicator is ‘in’.
19 Score in darts led pub too to get excited
DOUBLE TOP
(LED PUB TOO)* with ‘to get excited’ as the anagrind. DOUBLE TOP is double twenty: the 20 is the part of the ring at the top of the board.
23 Drab outcome at work still in area around Darwin
NON-EVENT
An insertion of ON and EVEN in NT. The city of Darwin is in the Northern Territory, abbreviated to NT. The insertion indicator is ‘in’.
24 Fine sailor was ahead of others, being legendary
FABLED
A charade of F, AB for Able-Bodied (Seaman) and LED.
26 Old man managed by soldiers badly in France, defying rational explanation?
PARANORMAL
A charade of PA, RAN, OR for Other Ranks or ‘soldiers’ and MAL for ‘badly’ in French.
27 Requirement once ready at intervals
NEED
The even letters of oNcE rEaDy.
28 Put out note before rental agreement
RELEASE
A charade of RE for the second ‘note’ of the sol-fa and LEASE.
29 Flatter American scheduled to tour Californian city with tons
ADULATE
A charade of A and an insertion of LA for Los Angeles and T for ‘tons’ in DUE. The insertion indicator is ‘to tour’.
Down
2 Gradually introduce heaps for repair at home
PHASE IN
A charade of (HEAPS)* and IN. The anagrind is ‘for repair’.
3 Woman found in Oregon or Maine
NORMA
Hidden in OregoN OR MAine.
4 More delicate sort of troubles, nothing less
SUBTLER
(TR[O]UBLES)* with ‘sort of’ as the anagrind.
6 Fancy bar elevated front in Torquay? That’s unexpected
ABRUPT
A charade of (BAR)*, UP and T for the initial letter of ‘Torquay’. The anagrind is ‘fancy’.
7 Charlie attending programme of study in large open space
CONCOURSE
A charade of C for the phonetic alphabet ‘Charlie’ and ON COURSE.
8 Perhaps, lead factor
ELEMENT
A dd.
9 Leading limo to move in due course
ALL IN GOOD TIME
(LEADING LIMO TO)* with ‘move’ as the anagrind.
15 Dealing with a problem, like an attentive lawyer?
ON THE CASE
A dd cum cd.
18 Crude advertising by individual around flag intermittently
PROFANE
A charade of PR and an insertion of FA for the odd letters of ‘flag’ in ONE. The insertion indicator is ‘around’.
20 British brace of fellows probing complicated deal in a confused state
BAFFLED
A charade of B and and insertion of FF for two ‘fellows’ in (DEAL)* The insertion indicator is ‘probing’ and the anagrind is ‘complicated’.
21 Acquire too much fuel?
OVEREAT
A cd.
22 Model couple of Poles, people of great energy
DEMONS
A charade of DEMO and NS for the two ‘poles’ of a magnet or planet.
25 Embargo a line of a hackneyed nature
BANAL
A charade of BAN, A and L.
Many thanks to Chandler for this week’s puzzle.

Nice distraction with a well-crafted puzzle. I liked SATCHEL, BELL-RINGER and OVEREAT.
Ta Chandler & Pierre.
That was fun and just about the right level of chewiness. Thought ELEMENT was elegant. My LOI, DEMONS, took longer than it should have.